Pimp My Filter #25 - Fluval FX4 Canister Filter

Fluval FX4 Filter (Amazon): geni.us/s4cRLE
Fluval FX4 Filter (Ebay): ebay.to/2sOVw4k
Foams and Biohome Ultimate: www.filterpro.c...
Full kits to upgrade a Fluval FX4 and FX5 / FX6 can be found on the 'Filter Kits' page of the FilterPro website: bit.ly/2LuRtl0
(FilterPro site has links to suppliers in other countries)
The Fluval FX4 has a powerful pump, excellent mechanical filtration and decent provision for biological filtration.
However, since it 'only' holds around 3kg of biohome ultimate it is really suited to normally stocked tanks of up to 300 litres (78 US gallons) or heavily stocked tanks of up to 150 litres (39 US gallons) if you want to achieve a full cycle.
Your FX4 will have extra red trays which fit inside main trays - they are not needed unless you need to use one in bottom tray to separate carbon from filter media without using a mesh bag.
A full cycle is completed by bacteria - the aerobic part of biological filtration which processes ammonia to nitrite and nitrite to nitrate followed by an anaerobic part which processes nitrate into soluble nitrogen which bubbles off to the atmosphere.
Therefore it requires a suitable amount of excellent quality filter media to be able to provide the environment for both aerobic AND anaerobic bacteria - that is what Biohome ultimate does perfectly but even with such good media there are limitations and we recommend the following amounts for different stocking scenarios:
(1 US gallon = 3.8 litres)
(1kg = 2.2 lbs)
Average community tropical aquarium = 1kg per 100 litres
Average coldwater aquarium = 1kg - 1.5kg per 100 litres
Predator aquarium = 1.5kg - 2kg per 100 litres
Large cichlid aquarium = 1.5kg - 2kg per 100 litres
Malawi / Tanganyikan aquarium = 1.5kg - 2kg per 100 litres
Marine aquarium = 1.5kg - 2kg per 100 litres
Average mixed fish pond = 1kg per 200 litres
Average koi pond = 1kg per 150 litres
You may be disagreeing with the above figures but remember that they are for a FULL CYCLE not half a job - achieving 0 ammonia and 0 nitrite is quite easy since aerobic bacteria grows freely on any surface but the anaerobic bacteria responsible for COMPLETING the cycle needs more a specialized habitat.
Size a filter properly, set it up sensibly and you will have perfect water - it's that simple....and your filter won't be the dreaded 'Nitrate factory'.
This series of videos is all about trying to squeeze more efficiency out of internal and external aquarium filters which generally have a limited filtering capacity - If you have a filter you'd like me to feature in a video then please contact me on:
[e-mail]
07772848730 (Richard)
Anyone who sends a filter (UK only at present) will have it upgraded and returned to them for free and the only cost you will pay is how much it costs to ship it to me - I'm helping to boost your filter and the resulting videos will hopefully be useful to viewers all over the world so it's a win/win.
The following videos will be useful to anyone interested in learning more about filtration, bacteria and making the conditions for your fish as good as possible:
Sizing a canister properly and filter set up: goo.gl/om19un
Looking INSIDE different filter media: goo.gl/hZWS6c
Bacteria and filter media: goo.gl/123gAF
How to clean an aquarium: goo.gl/bPMhvh
Aquarium tips / filtration playlist: goo.gl/pXgqVj
Check out my channel for hundreds of videos on a wide range of my hobbies - many of the videos have educational content so if you have enjoyed any give them the thumbs up and share.
This channel is purely a hobby for me so I will never ask viewers to donate money for any of my projects or charge anyone for information - information should be shared freely and I certainly don't consider myself an 'expert' in anything I pursue as a hobby so please do your own research, never accept anything as 'fact', reject anyone claiming to be some sort of authority or 'expert' and make your own minds up about anything you wish to study.
We all are on a long path of learning.........
RECOMMENDED PRODUCTS ON AMAZON: goo.gl/jMaBWy
INSTAGRAM: / pondguru_outdoors
FILMING EQUIPMENT:
Panasonic HC-VX870 HD camcorder geni.us/3UwE
+Rode stereo microphone: geni.us/4OL
+Rode 'deadcat' mic cover: geni.us/1pmn
JVC Everio quad proof HD camcorder: geni.us/e09e
+Rode 'deadcat' mic cover (opened up and held between tripod and camera base) geni.us/dee24
Zomei Z666 tripod: geni.us/1a1af3
Manfrotto MTPIXI-B PIXI mini tripod: geni.us/87f7
If you've enjoyed this video please check out the playlists on my channel for hundreds more - on a variety of subjects.
Feel free to share or link any of my videos on facebook, twitter, forums etc. for the benefit of anyone you think may also enjoy watching.
See you next time.
Pondguru

[@pondguru]

Fluval FX4 Filter (Amazon): geni.us/s4cRLE Fluval FX4 Filter (Ebay): ebay.to/2sOVw4k Foams and Biohome Ultimate: www.filterpro.co.uk Full kits to upgrade a Fluval FX4 and FX5 / FX6 can be found on the 'Filter Kits' page of the FilterPro website: bit.ly/2LuRtl0 (FilterPro site has links to suppliers in other countries) The Fluval FX4 has a powerful pump, excellent mechanical filtration and decent provision for biological filtration. However, since it 'only' holds around 3kg of biohome ultimate it is really suited to normally stocked tanks of up to 300 litres (78 US gallons) or heavily stocked tanks of up to 150 litres (39 US gallons) if you want to achieve a full cycle. Your FX4 will have extra red trays which fit inside main trays - they are not needed unless you need to use one in bottom tray to separate carbon from filter media without using a mesh bag. A full cycle is completed by bacteria - the aerobic part of biological filtration which processes ammonia to nitrite and nitrite to nitrate followed by an anaerobic part which processes nitrate into soluble nitrogen which bubbles off to the atmosphere. Therefore it requires a suitable amount of excellent quality filter media to be able to provide the environment for both aerobic AND anaerobic bacteria - that is what Biohome ultimate does perfectly but even with such good media there are limitations and we recommend the following amounts for different stocking scenarios: (1 US gallon = 3.8 litres) (1kg = 2.2 lbs) Average community tropical aquarium = 1kg per 100 litres Average coldwater aquarium = 1kg - 1.5kg per 100 litres Predator aquarium = 1.5kg - 2kg per 100 litres Large cichlid aquarium = 1.5kg - 2kg per 100 litres Malawi / Tanganyikan aquarium = 1.5kg - 2kg per 100 litres Marine aquarium = 1.5kg - 2kg per 100 litres Average mixed fish pond = 1kg per 200 litres Average koi pond = 1kg per 150 litres You may be disagreeing with the above figures but remember that they are for a FULL CYCLE not half a job - achieving 0 ammonia and 0 nitrite is quite easy since aerobic bacteria grows freely on any surface but the anaerobic bacteria responsible for COMPLETING the cycle needs more a specialized habitat. Size a filter properly, set it up sensibly and you will have perfect water - it's that simple....and your filter won't be the dreaded 'Nitrate factory'. This series of videos is all about trying to squeeze more efficiency out of internal and external aquarium filters which generally have a limited filtering capacity - If you have a filter you'd like me to feature in a video then please contact me on: [e-mail] 07772848730 (Richard) Anyone who sends a filter (UK only at present) will have it upgraded and returned to them for free and the only cost you will pay is how much it costs to ship it to me - I'm helping to boost your filter and the resulting videos will hopefully be useful to viewers all over the world so it's a win/win. The following videos will be useful to anyone interested in learning more about filtration, bacteria and making the conditions for your fish as good as possible: Sizing a canister properly and filter set up: goo.gl/om19un Looking INSIDE different filter media: goo.gl/hZWS6c Bacteria and filter media: goo.gl/123gAF How to clean an aquarium: goo.gl/bPMhvh Aquarium tips / filtration playlist: goo.gl/pXgqVj Check out my channel for hundreds of videos on a wide range of my hobbies - many of the videos have educational content so if you have enjoyed any give them the thumbs up and share. This channel is purely a hobby for me so I will never ask viewers to donate money for any of my projects or charge anyone for information - information should be shared freely and I certainly don't consider myself an 'expert' in anything I pursue as a hobby so please do your own research, never accept anything as 'fact', reject anyone claiming to be some sort of authority or 'expert' and make your own minds up about anything you wish to study. We all are on a long path of learning......... RECOMMENDED PRODUCTS ON AMAZON: goo.gl/jMaBWy INSTAGRAM: instagram.com/pondguru_outdoors/ FILMING EQUIPMENT: Panasonic HC-VX870 HD camcorder geni.us/3UwE +Rode stereo microphone: geni.us/4OL +Rode 'deadcat' mic cover: geni.us/1pmn JVC Everio quad proof HD camcorder: geni.us/e09e +Rode 'deadcat' mic cover (opened up and held between tripod and camera base) geni.us/dee24 Zomei Z666 tripod: geni.us/1a1af3 Manfrotto MTPIXI-B PIXI mini tripod: geni.us/87f7 If you've enjoyed this video please check out the playlists on my channel for hundreds more - on a variety of subjects. Feel free to share or link any of my videos on facebook, twitter, forums etc. for the benefit of anyone you think may also enjoy watching. See you next time. Pondguru

[@yannibarghouty1715]

I just got an fx4 as a birthday present, and I'll be setting it up over the next few weeks while rescaping my 80g. I had a couple questions if you don't mind- 1. I have 50 micron polishing pads cut to fit the top tray where you placed your fine pad- is it wise to use such a fine pad/ will it clog up quickly, or will having a semi fine pad like this www.amazon.com/gp/product/B000HHO764/ref=ox_sc_act_title_3?smid=ATVPDKIKX0DER&psc=1 help to prevent any decrease in flow? 2. I'm about to buy some biohome ultimate, mainly because I found the fact that it can house anaerobic bacteria kind of fascinating and very useful. Do you need a special starter to seed anaerobic bacteria, or is a starter like seachem stability enough and the anaerobic bacteria come naturally? And is it possible that, in a planted tank, the anaerobic bacteria will compete with plants for nitrates, or is it more likely that they'll compete with and prevent unwanted algae that would have absorbed what the plants cannot? Thanks! Appreciate your channel.

[@ObscuraAbyssus]

Hi, i just ordered the pond foams now for my fluval and plan to chuck the red trays but i have purchased the fluval circular carbon sponges for the fx4 i was curious if i still need the red tray to keep it seperate from the bio media?

[@ObscuraAbyssus]

Also the biohome ultimate is no sold anywhere anymore i think i tried look for it on amazon no luck

[@pondguru]

@@ObscuraAbyssus There is a link to my site (FilterPro) in the video description and pinned comment. I think the seller on amazon UK had problems with one of the ID numbers being the same as a filter from another manufacturer and trying to sort it out with amazon was a nightmare so he now sells on ebay. You won't need the red trays in the FX4 / 6 as all trays would be filled with media with the fine pad on the top of the top tray.

[@ObscuraAbyssus]

@@pondguru Alright ill check it out thank you

[@saskarma5344]

Do not put any media like that in the bottom as " primary settlement " if u plan on using the water change valve at bottom. The little bits of gritty stuff they eventually give off ruins the seal and causes the valve to leak.

[@lukedehart7667]

Think I’ll try putting a bit of filter foam over it to help protect it and see how it goes.

[@charissimpson235]

@@lukedehart7667 did you see any result?

[@jamiekasp11]

Anything?

[@Weldywelderfac3]

I use the big pre filter bio media big holes in it to let water flow

[@yardbomber9099]

This is soo awesome! I'm purchasing an FX4 for my 75G African Cichlid tank to replace the Sunsun 304B that's making a helluva racket even with a new impeller! Your videos for both the Sunsun and the Eheim filters (which I have both on the 75G) have kept my tank sparkling clean so much that my fish look like they're floating in air my water is THAT clean! Thank you so very much for taking the time and sharing your infinite wisdom and your valuable knowledge!! You're awesome!

[@EnragedSeaCow]

Wife got me a Fluval fx4 for my 75g discus tank and it's a game changer over my old two hang on back filters. Not too much flow for my discus, and enough flow to even keep the bare bottom clean of debris. I'm about to Pimp out my filter now! I'm new to canister filters, you made it easy. NA Measurements you included were great too, once this sponge comes in ill cut it to your dimensions.

[@pondguru]

Good one - I'm glad you found the video useful and best of luck with the tank.

[@d.od.3463]

My first viewing of your excellent instructional video. I am new in my 'fish-keeping' hobby and don't understand all that jargon yet but will continue to watch until I do! Thanks very much for the links below, they will be very helpful in the near future! Regards, David O'D

[@danny675851]

I ordered the fx4 upgrade from this guy two days ago, installed the upgrade yesterday and today my water looks amazing. Literally crystal clear... I used exactly the same setup but put some established bio media in with the bio home to populate it. Honestly best 70 quid i've spent on my tank...

[@ericjenningd1142]

I watched your video on the fx4 I was having trouble with high nitrate so I put most of the ceramic tubes that come with the filter in the channel at the bottom then did all that you said I now have a 340 litre tank well stocked with happy fish and plants thanks .

[@pondguru]

Good stuff and I'm glad you and the fish are pleased with the upgrade.

[@markfigueiredo682]

I did the same thing

[@NatuRElated]

Really like your videos. But honestly, I'm excited for the next update on the pond!

[@mattn4705]

Just gone and purchased what I need for my new fx4🙂🙂. After being without a tank for a few years, it’s now time to invest and get back in the game 🤩

[@CasildaChenier]

I just cleaned mine out. I have it on my saltwater tank. I did take similar steps of what you did. :)

[@rayfuller8517]

By my calculations, perfect for a 75-gal tank. Thanks for the information.

[@petfeeding101]

Just added this to my 75 gallon turtle setup. The 8" Red Ear Slider Turtle was destroying hanging filter daily. This filter turned my tank into a river, so much flow. Running the stock setup, but I do plan to buy generic media to create filtration specific to Turtle life. I have two 4" goldfish in the tank, they love all flow!

[@nikdi5743]

When he says “kilo” it’s so satisfying….he says it a lot and I sometimes forget that it’s just referencing filter media 😅

[@aarondavies8486]

No he is talking about weight of something

[@sludgebuster9677]

What the reviewer is not aware or not told you is that putting in other 3rd party course, medium and fine foam plus other more biological medium is that the flow rate of the filter is severely reduced alot compared to the supplied media foam and ceramic rings. So you need to bear that in mind, if having reduced flow is ok for your size of tank.

[@OriginalMindTrick]

The flow is only going to be limited compared to the stock setup when the fine pad gets clogged, which varies in time depending on the tank. The biohome is not reducing flow much.

[@timmyanders7914]

Iv done this pump to mine and that’s exactly what happened it’s reduced the flow by atleast 1/2 if not more I’d say

[@bobbymckeel1034]

What I did with my Fx4 since it handles ammonia and nitrites really well is I put it on my 75 gallon planted tank and adjusted the nozzles and flow to accommodate the plants. Plants help handle the nitrates and the Fx4 runs on a 75 very well. I also have two small sponge filters hidden in the back so that helps as well!

[@danielsinclair5374]

I did exactly the same as what is suggested in the video, spending a lot of money on biohome ultimate, and found the flow from the filter is reduced so much the waste builds up in the filter dramatically and leads to constant cloudy water. This causes a bloom of detritus worms within the filter (which find there way into the tank) and a lot of waste build up along the bottom of the tank itself. Although the video's main point is to try and increase the maximum amount of surface area within the filter, an overload of media can cause problems. Upgrading the existing sponges and ceramics is a fantastic peice of advise and I also recommend anyone buying this filter to do the same. Instead of filling all the cavities with ceramics, I suggest placing a medium-coarse sponge in the inner circle (16.5cm diameter) and course sponge for the outer rim at the bottom, with ceramics in the smaller inner rim to use the empty cavities effectively. This doesn't compromise flow whatsoever. The fine white wool stuff also does a good job when sat at the very top of the trays.

[@n0pu1s3]

Would you be able to provide pics of what you did?

[@dressageandalusian]

I know this is an old video and comment but you hit the nail on the head! These ideas are not tried out on tanks in real life! It is all well and good to in theory upgrade it and fill every space with media but practically sometimes these great ideas don't work.

[@danielsinclair7593]

I didnt take any at the time and would have to take it apart to do so now. I've made some adjustments over the last 18 months or so, see below. - do not place any sponge in the middle circle at the bottom. It clogs very quickly and prevents the filter from working properly within 2 weeks after a full clean. - do not place any ceramics in the bottom outer rim. They can get trapped in the propeller. - synthetic wool at the top is optional. Depending on your bioload, you may be replacing this on a weekly basis. I stopped using it and found no reduction in water clarity

[@jstu8]

Your ideas are so helpful. Thank you so much!

[@3volk715]

@@danielsinclair7593 I was completely planning to do this and then got to thinking "I wonder what other people think" (and it made me miss the dislike button count) but I realized I couldnt be the only one second guessing filling the bottom.

[@madusonkeeper]

There are pads for nitrite, phosphate removal and also bags for other filter media like resins and zeo filtration as well as the carbon pads and foam and stone

[@Timiijs]

Cheers for suggestions, bought yesterday this for my 60gallon tank, so now i know how make better performance for this filter

[@T0tenkampf]

I am not sold on these to replace my EHEIM Pros in aquaria but for my 75 gallon red eared slider turtle tank the extra mechanical filtration and flow rate make it a better choice. thanks for the info on correctly stuffing it. I don't know why the manufacturers get it wrong...even EHEIM puts the fine filter pad on the wrong spot.

[@CarlosAlvarez-fv3di]

Got mine on my 75 gallon saltwater tank for a year fish and corals doing great clean it out once a month plus my weekly water changes

[@zambimaru]

I tried this set up in my FX4 and it ended up being too much Media. I removed the Ceramic Rings from the bottom and it worked fine.

[@skeeterman7144]

Bio rings in the bottom has to affect water flow. I’m not going to try that.

[@peterock4948]

Just want to say thank you for this information. My fish will be even more grateful from the sounds of your video. Keep on

[@Etrigan3774]

This is a really informative video and I'm curious I have a red-eared slider that I just bought an FX4 for and I was wondering if you would change any of the setup that you just did. Turtles are extremely messy and I'm trying to optimize before I install everything.

[@n0thingizeasy]

Also wondering! I have a 100g tank and also just bought this filter… I’m adding more bio too

[@FinsandFilters]

I just bought a used FX4. First thing I did was to throw out all the bio media. I have a 125 gallon cichlid tank with about 100 fish but I also have about 350 lbs of rock in there, for sure I don't need any more bio media. I just use the sponges and a big bag filled with carbon.

[@aquaticsandfurries8718]

Glad you done one of these, have mine set up like that apart from the settlement cavity, will add that next filter clean

[@pondguru]

Good stuff and I'm gla dyou found the video useful

[@steverabbits]

Fanflippingtastic! I inherited an FX4 with zero media when I bought a used 400 litre tank last week, I wish I'd found this video before I bought a load of compatible media for it! At least I didn't have to pay genuine fluval prices I guess 😂 I will definitely be pimping my FX4 along the lines you have shown, can't wait!

[@mikesmith-yc3os]

Hi Richard Just Installed Your Fx4 Upgrade Kit And Im Well Impressed Thank You

[@crazy5600]

I'm thinking about getting this for my 350liter(92gallon), turtle tank that is about half full, since i have basking areas. I'm more concerned about mechanical filtration as turtles can make do without 100% perfectly clean(from a nitrite/nitrate standpoint) water. I could go with a 407 as well but for the extra 30 euros in my country i think the fx4 is a better fit.

[@zombieslayer658]

Tou should be adding some purigen into the bottom tray at least you would have some chemical filtration plus you will get better water quality

[@SuperMan-xy8ui]

I admire your effort with the video. Water will always take a path of least resistance so use of combination coarse/medium foam in the outer rings means that water will largely bypass the medium foam in favor of lesser resistance encountered in the coarse foam. i would suggest coarse foam only in the bottom outer ring then medium-only foam in the upper outer ring. I would use the finest filter pad in the bottom, not top, of the center bottom ring to catch small particulates before they interact with the impeller. Good job with the video!!

[@Anytyme06]

What would it matter if it catches the fine particles at the top or bottom? Top is better so it doesn't get in the bio-rings!

[@Hornbyttgingernerd]

I was so tempted to buy this but so glad I opted for the fx6 with increased media capacity

[@DLlama]

So glad I saw this video before buying this filter! Looks like I can do better after all! Thank you for separating truth from marketing! I know these are older videos, but what I wish you would do is show the best filter setup possible. Like, what should we do? What's the best option? I don't have room for a sump, but still have a turtle that needs cleaner water and I don't wanna pay for a bunch of marketing and bad design I don't need. I'm sure I'm not the only one either 😅

[@pondguru]

In this series I just concentrate on the individual filter set ups regarding the foams and media but I'm intending to do one on the in / out / spray bar set up options some time in the future. The video will show the flow by using the gel filter balls moving in the water as they are fairly neutral buoyancy.

[@arthurpellett9256]

I use several fx filters the red trays go straight in the bin all they do is take up space which can be used for media

[@pondguru]

lol, that's exactly where they belong - there's no point making filtration more complicated than it needs to be.

[@aaaaaaaas67]

Hi , I just got the Fluval X4 on a 75 gallon , where can i buy the foam in the US , preferably on amazon , not sure what it is called and what to look for , any help is truly appreciated!

[@ericshalosky6963]

I would love to see you pimp a Fluval G series filter, either a G3 or a G6.

[@74jodoc]

Hello everyone. I did the spong pimp to my fx4 about a month ago. I checked it today and wanted to add the media to the cavity at the bottom. I has able to get 1.6kg in each basket. My daughter helped me stack the tablets of biohome ultimate. Be cautious when stacking trays together and insure top tray is fully seated into the bottom tray. Apparently mine wasn't and I had some muck to clean out. The filter setup is working great @pondguru that black round thin pad is fluval fine filter to print debris from enter pump motor. I agree with you and removed it and replaced with fine filter pad at the top tray. Sorry for long comment however thanks for the information.

[@prockfisherman8661]

I just hot one and did the upgrades. Only thing is the media I bought is a bit smaller. I mixed the two together and filled both trays with it. I hope it's OK. I start it up in the morning. Hope it dont effect the flow.lol

[@pondguru]

I wouldn't worry about that since the media has very little effect on flow rates for filters unless it is extremely small and packed very tight together (and clogged up with muck). The fine white pad (when clogged up) is the factor which leads to the flow slowing down so when the flow slows down that lets you know that it needs changing and the filter needs cleaning. It makes no difference where the fine pad is located in the filter trays as to how quickly it clogs but with this filter it should definitely be on the top of the top tray since water flows through the filter trays from top to bottom. Having the fine pad on the top allows the media to stay clean and effective.

[@prockfisherman8661]

@pondguru thanks alot. The fx 4 is up and running great. Did all the upgrades . Filter Foam didn't arrive in time so I'll add that on my first water change. Looking great so far except for the new tank cloudy cycle time but its only been 24 hours and it getting clear. I appreciate all the tips.

[@ThousandYardStare]

@@prockfisherman8661 (my other channel) Good one and best of luck with the system. It will settle down quickly once the media starts to colonize with bacteria.

[@wernerschondorfer6625]

I will definitely reconfigure my FX4 on my malawi tank. Fortunately it works together with an Eheim 4+ 600 on my 450l tank, so it's enough "space" and power together ;). Thx & greetings from Austria.

[@simplifygardening]

Great filter Richard, See ya soon

[@carlosbarajas382]

I heard the Aquatop CF400 uv MK2 is better and it’s a lil cheaper too

[@garykreeger8244]

Nice review. Really felt for you with the pong issue 😷 Now that's dedication to the cause.

[@AnthonysFishyFriends]

Why do you use both coarse and medium foam on the top and bottom tray? Would it work better to have coarse on the outside of the bottom tray, and medium on the outside of the top tray, and fine pad in the middle of the top tray? Thanks for the videos.

[@user-sparky]

Hi. I’m looking at getting a new filter for a 240ltr tank. I was thinking of getting the Fluval 407 but some people say get this fx4. I have the 307 sat in the shed at the moment that come with the tank. Love watching your videos Thank you Mark

[@pondguru]

What is the intended stock for the tank? - that will dictate the size of filter needed.

[@user-sparky]

Not heavily stock. It’s just going to have a common community tank. Ie platy, guppies and neon maybe some cherry shrimps. Thank you for your reply

[@pondguru]

@@user-sparky In that case the FX4 will easily be big enough as it holds 3kg of filter media - just avoid using seachem prime / safe if you are trying to achieve a full cycle (reduction in nitrate) since it will starve the bacteria and prevent a full cycle. If you think one day you'd like to have a heavier stock e.g. cichlids, discus etc. then the FX6 would be the one to go for as it holds 5kg of media giving you 2kg per 100 litres. Of course there are other choices of filter which also hold a similar amount of media.

[@user-sparky]

@@pondguru thank you very much I’m going for the fx6 with the spray bar. I normally use the seachem purigen. Could I still use this or is there no need ?

[@ThousandYardStare]

@@user-sparky There is no need for any chemical media unless you need to use chemical media. See how it goes and if the clarity isn't perfect then go with a pouch of chemical media to clear it up. It will go last in the system so in an FX4 / 6 it would be in the bottom of the bottom tray. Best of luck with the tank.

[@mikeobrien4439]

Thank you again Richard I did try to give it a good clean before I sent it to you I should have left it open for a few days thanks again Michael

[@pondguru]

No worries and apologies for not getting the video uploaded sooner - I'm way behind on editing and have over 30 more still to do. I'm glad you're pleased with the filter.

[@charissimpson235]

Hey I know this comment is 3 years old so you probably won’t notice, but can you let me know what sort of results you got from this filter before and after the upgrade? Thanks

[@TINYGINCH187]

I have my fx4 on a 220gal...and its perfect

[@voicebox6026]

Hello, I have a 6ft 125 gallon tank. Would you recommend two FX4's or two 407's for that size tank? I plan to keep mostly tiger barbs , loaches and a few panda garra.

[@AQUAGUYUK]

I just added mine to a roma with biohome media lets see i may even add the spray bar also and using your media

[@pondguru]

Best of luck with that - the spray bar is a great idea due to the heavy flow of these big filters.

[@kevinshaw7670]

I know this video is older but if you take one of those red trays it will fit in the bottom center with a bit of trimming off the top. This will give you some space for chemical media.

[@esotericman22]

Great video Richard. As always.

[@hendrikwirtz8418]

Another great video! :) The different stages are just different types of sponges. Anyway love your videos and Biohome :)

[@Sahadi420]

Almost. There are 5 stages (meaning 5 places of filtration) in the filter. 1) the outer sponges 2) the top of the red tray on the top basket 3) the bottom of the top basket 4) the top of the red tray on the bottom basket 5) the bottom of the bottom basket 5 STAGES, not 5 TYPES. :)

[@hendrikwirtz8418]

@@Sahadi420 I meant the coarse sponge is one type of sponge and one stage of filtration just like the medium sponge and the fine pad is. The filter has a 3 stage mechanical filtration with 3 three different types of mechanical media. The red tray is irrelevant In the set up, you can take it out.

[@Sahadi420]

@@hendrikwirtz8418 the red trays are there to simply give you the option to separate the inside space in the basket. I have the red trays IN on the top basket of my FX4 and 6 to simply put in another sponge. Bio-home is under that sponge, and fills the entire middle area in the lower tray(s). You're correct about the different sponges....I'm just saying Fluval means the "5 levels of filtration" are 5 different places you can filter the water.

[@hendrikwirtz8418]

@@Sahadi420 yes indeed that is what Fluval says and that are 5 places to filter the water :)

[@alansaunders8196]

One complaint of this filter is the clips that tighten up to hold the lid in place. Forever breaking & although they are only plastic they are expensive to replace. Been looking for metal ones but not had any luck yet. If anyone does know please post where they can be purchased. Great video tho thanks.

[@leopaulbravo7016]

The FX Series has always been foam heavy and having less space for filter media. I was going to purchase either an FX4 or an FX6 but I settled on an Eheim Classic. Now I am beginning to replace my old canisters with Aquaels. Awesome video Sir Richard. Looking forward to the next one.

[@jmeheliboy]

Your the man I just got an fx4 for my plant high tech 200l yesterday ready for pimping 😃

[@AquaNoxLTD]

I owned anfx4 but sold it after 9month I wanted one for a while n desired to get one n was disappointed in it don't get me wrong it is a beast has a ton a flow and keeps a 300ltr tank spotless but it has bypass issues it don't hold a lot of biomedia I had to add an eheim classic to my 300ltr tank as back up to hold more bio then I was cleaning the propellorn snapped the shaft I had to order a new propellorn and shaft for 35pound just to get a shaft which came broken as well as fluval don't package it right so the shaft is in the propellorn and rattles about in pagaging and there's a good chance most come this way so I ended up selling it the only fluval filters Iv got that I do love is my 207 and c2

[@The_Draque]

I got a second hand FX6 and i threw those little red trays out immediately. they just waste so much space that can be used for BioHome Ultimate

[@JaymesPayten]

Cheers Richard. Great video!

[@neilsmith4903]

That was me who said about using that cavity

[@pondguru]

Nice one and thanks for that - I got your name totally wrong sorry about that, lol My lack of short term memory means I always have to tell the truth which is definitely a good thing but sometimes it is embarrassing when I can't remember people I just interacted with, even if I only met them hours before.

[@neilsmith4903]

Thats ok chap my memory just as bad so dont worry

[@English-Sparta]

Well done Mark I mean Matthew sorry 😜

[@dimonduncan2093]

What exactly do you mean by primary sediment media? What do you use?

[@migueleespinosa2632]

Can this be done with an FX6?

[@CmdrX3]

Couldn't you put a carbon pad in the central section under the trays so you don't use up space inside the trays.

[@HanworthHomebrew]

Like you I binned the red trays as soon as I set it up ... what a waste

[@kevinbudd3030]

I have a 270l salt water marine tank it comprises of 1 3 striped damsel 2 clown fish and one dog faced puffer also 4 crabs if they are still there I've got a all pond solutions ef1 but I am looking to buy a fluval fx4 I've seen your hack will it be OK in my 270l aquarium

[@ThousandYardStare]

(my other channel) Ideally you'd aim for approx. 2kg of media per 100 litres for a marine system so I'd say go for the FX6 all day. It will hold 5kg of media as opposed to the FX4 which will only hold 3kg of media. That is a massive difference.

[@garyhill5602]

I have a FX4 on the way for my 200L tank. In the cavity can I use the ceramic media it comes with instead of buying eheim mech?

[@dar1963]

I have the same question!

[@garyhill5602]

I've used it. I'm certain it won't make a difference. It's basically the same thing just slightly bigger.

[@jannerkev]

Hi Gary. I set my fx4 up with the ceramic rings to start with. But twice the amount. (Used the ones from my old fx5 ) and seemed OK. But have now changed to bio home. Hopefully that will be better. Will keep you informed.

[@AQUAGUYUK]

Ok coming soon is this kit fitted to the new fx4 just delivered i got the upgrade kit so looking forward to that and must say items turned up quick so thats Richard

[@ThousandYardStare]

(my other channel) - Nice one, I'm glad it arrived quickly as it was sent on a 24hr service. Best of luck with the tank.

[@westie2488]

Where can you get the exact media your using also the correct name. As I'm ordering online

[@raidervic2428]

How could this FX4 test so mediocre but the FX6 so good? With only one extra tray?

[@TURKO2424]

I have 2 fx4 on my 125 keeps my water cleeean

[@MannySingha]

Thank You soo much for the video. I had a quick question. I've bought a tank that has the fluval 306 filter and the fx4 filter. I'm going to run them together for my tank 260l reef. Would i be able to just load one of the filters (fx4) with pure biomedia?? I'll load the 307 the way that you showed us in the previous video.

[@tommybunk2292]

So after all the gunk gets trapped in the Eheim ceramic ring centers (that can't be back flushed out), the vertical flow upwards to the center of the filter is suppose to shift horizontally black blue black blue giving you coarse fine coarse fine filtration as it ascends 🤔 I will say it looks pretty cool...and just think about all that money you'll save from not needing aquarium fertilizer by all the extra nitrates produced by the ceramic rings when feeding all your Plants...very thrifty 😉👌

[@stuartcross749]

Could u add a all pond solution canister like the 2.3 litre with more bio media thanks

[@pondguru]

On the oitlet side yes although you may need to fanny about with different fittings to get the FX pipe onto the booster.

[@ThePlantedTankTV]

Is there any way you could do a AquaClear 30 HOB?????? I need you to do this one please I love you bro! Yeehaww!

[@iLLFXdrUms]

I’m new to the hobby, and I’m curious as to why you believe the two trays don’t house enough bio media? I’m not saying you’re incorrect because I’m obviously still learning lol, but how do you quantify what the correct quantity should be?

[@ThousandYardStare]

(my other channel) I base the amount needed on the weight of media necessary to support enough bacteria to process the ammonia, nitrite and nitrate (a full cycle). Those figures have been gained by having over a decade of feedback from thousands of people all over the world and I never used to state an amount which was needed until I was happy that the 10+ years of data was enough information to make that call. This is from the Q&A page on the FilterPro site: IS THERE A MINIMUM AMOUNT OF BIOHOME REQUIRED TO ACHIEVE FULL CYCLE FILTRATION? Yes - Using 500g in a huge filter on a 500 litre tank will not reduce nitrate if all the other media is producing nitrate. When a sensible amount of Biohome is used the results are outstanding. Through years of Biohome being used in all sorts of aquariums and ponds the recommended amounts of Biohome needed to see a good reduction in nitrate (full cycle filtration) are as follows: (100 litres is approx. 26 US gallons and 1kg = 2.2 lbs) Average community tropical aquarium = 1kg (2.2 lbs) per 100 litres (26 US gallons) Average coldwater aquarium = 1kg (2.2 lbs) - 1.5kg (3.3 lbs) per 100 litres (26 US gallons) Goldfish aquarium = 1.5kg (3.3 lbs) - 2kg (4.4lbs) per 100 litres (26 US gallons) Predator aquarium = 1.5kg (3.3 lbs) - 2kg (4.4 lbs) per 100 litres (26 US gallons) Large cichlid / discus aquarium = 1.5kg (3.3 lbs) - 2kg (4.4 lbs) per 100 litres (26 US gallons) Malawi / Tanganyikan aquarium = 1.5kg (3.3 lbs) - 2kg (4.4 lbs) per 100 litres (26 US gallons) Marine aquarium = 1.5kg (3.3 lbs) - 2kg (4.4 lbs) per 100 litres (26 US gallons) Average mixed fish pond = 1kg (2.2lbs) per 200 litres (52 US gallons) Average koi pond = 1kg (2.2lbs) per 150 litres (39 US gallons) Ammonia and nitrite will be reduced at much lower amounts but full cycle filtration is the only 'proper' filtration therefore the figures above are for the filtration job to be done properly resulting in less water changes being required. REMEMBER - It is always better to over-filter than under-filter as a filter with a larger capacity will react more quickly to any pollution incidents and process waste before levels rise above safe amounts.

[@mrmixjay]

by putting the biological material in the bottom there is no danger of washing away the good bacteria when we use the drain / load valve?

[@IFIXCASTLES]

Like your spin on it!

[@alk3myst]

Great Video. Placed an order for your FX4 kit. Going with some Eheim Mech Pro for the bottom (1 liter). Now just have to figure out how to cut my tank stand to fit this thing inside :), it's about 1" or so too narrow.

[@pondguru]

Thanks for the order. I wouldn't bother with the mech pro in the bottom as it could affect the flow from the drain pipe. I put the media down there in this video as it was a suggestion from a viewer but I'm not convinced that it does anything or is needed.

[@alk3myst]

@@pondguru Thanks got my box today. Do I need to pre-clean your media? I have the Ollie and Hutch Flipper Wildwood 55 gallon stand if you or anyone here can offer suggestions to modify. If I was building it from scratch I'd leave one of the rear one panels off and a middle shelf. Unfortunately mine is glued (even if not removing the rear panel now would be difficult). I am planning on using a 4.5" circular saw to remove what I have too.

[@pondguru]

@@alk3myst Ideally the media should be quickly rinsed with water you've drained from the tank or with treated tap water but it's not essential - any 'dust' will simply be fine sand generated during transit and will not harm anything. Either way as soon as the media goes into the system it will mature very fast.

[@alk3myst]

@@pondguru Finally found the time to setup the FX4 (I had to modify my existing stand). Within minutes my 55 gallon tank was clear and has been clear a week now. I installed with a water bar since I like the sound of the trickleing and the reduced flow doesn't seem to be hurting anything. Your kit was a great purchase rather than having to buy too much of things. My trays were well filled and if I wanted I could manage to get some charcoal bags in the bottom tray (so far I don't think I need them). Big THANK YOU from Florida!

[@ThousandYardStare]

@@alk3myst (my other channel) Awesome stuff - best of luck with the tank. A proper filter upgrade is the single most important investment for any tank.

[@wannatry69]

this was the video was looking for. thanks heaps.

[@whatsthat5482]

hi Richard, no one is ever going to own all of these filters, but I am really enjoying the series, well done and keep up the great work. I have a pond solutions canister filter on my 200l tank, set up your way and its fantastic, thanks

[@Billy18963]

Fx for filter is rubbish I have it running on my 350 L tank and the pump just pulls through the sand straight through saw the tank is constantly murky we definitely are changing those filter pads thanks

[@JasPlun]

FX4 be good for a 75 gallon Heavy stocked African Ciclid tank? From what I gathered here it would.

[@jordynswildadventures7707]

Hello and thank you for your video's. I did recently purchase a Fluval FX4 and I am excited about it for the price point. I am definitely going to use some of your recommendations for the setup of the filter media. I did have one quick question. i usually use a pad of filter floss to help polish the water off. At what level would you recommend putting this in, top tray or bottom tray?

[@pondguru]

That is what the fine white pad is in the top of the filter in this video - it ensures that only clean water passes down to the filter media.

[@kc0dxf]

What dechlorinator would you recommend?

[@aquaticspendthrift4228]

Can you do a video on api filstar xl I like them since they are simple but im curious about your opinion

[@Jo-kh1yo]

I have a three hundred litre fish tank with two fish in it, a comet and common goldfish... the common goldfish is about 7 inches long and the comet is about 5 inches long... should I get the FX4, 5 or 6?

[@simonsmode5023]

Hi, I have an 8,000 gallon Koi pond with an Oase Proficlear drum filter with 2 additional media sections with K1 and an end section which houses the pumps and the UV's. That last section also has 2 baskets which is for additional media not provided by the manufacturer and the choice is left to the user. I have no problem with my filtration but I have 2 empty baskets that could be filled. Would Biohome Plus or ultimate be beneficial? You state 1kg per 100 litres so I wonder if 5 kgs is actually going to do anything on an 8,000 gallon pond? In fact is any media in that small quantity going to add anything to that size pond? I would be interested to hear your views.

[@littlewhitedove7]

So what's the next best thing to biohome filter media that you use because it can come to more than what the filter is worth⁉️⁉️

[@prockfisherman8661]

Would you put the purigen in the bottom? I'm gonna add a small purigen andchemi pure bag? I'm just wondering since there is charcoal in the chemistry pure if it goes in the bottom? Thank you

[@pondguru]

Yes you can add chemical media in the bottom of the bottom tray if you need to. Unless there's a problem with staining from bogwood or you need to draw in residual fish treatments you won't need chemical media when you have a suitably sized, well set up filter.

[@mattvadenais8585]

Great instructional video for upgrading FX4. Looking for a source for the large and medium foam (in the USA)

[@leomarc634]

3 months ago I bought a fx4 and now it stopped sending water to the aquarium, it reduced the flow to 0 I tried to contact the store and the river but the answer I have is that I need to buy a new one I am very upset and I do not recommend this canister because I lost it too much money with something that doesn't work.

[@gregoryh4601]

Just one Question would this Filter work for a 100 gallons Discus Tank a will have Three Lifeguard filters to Add to my Tank. A few plants and 10 discus with 1/2 sand. Thanks

[@seanlyons8053]

Would this set up work for African cichlids?

[@ThousandYardStare]

(my other channel) Yes for sure and since a cichlid tank would be classed as 'heavily stocked' compared to normal tanks the need for optimal filtration is even more important.

[@jzan8616]

about to set up 2 Fluval FX6. If set up properly and more efficiently, roughly how many pounds of Bio Home Ultimate will fit in each FX6? I have 5 pounds already. They will be running 125 gallon tank.

[@danny675851]

Hi have noticed that there is another space underneath the bottom tray, at the very bottom of the canister, looks about the right size for a bag of chemi pure or similar product. I am wondering whether you would know whether it is ok to utilise this space as well, or leave it empty?

[@madmax1412]

I have just bought a 650 litre tank second hand and plan on having it heavily planted but also quite a few community fish. I was looking at this filter due to it being advertised as being suitable for this size but after watching your video, I have my doubts. You mention cheaper filters that have more biological filter. What would you recommend? BTW, I was given a 2nd hand AquaOne 2200 but found it extremely hard to get the top off due to how it's designed which is why this one appealed to me. In fact, one of the clips broken in trying to get the lid off due to the incredible suction it has. Thanks in advance.

[@Glenmoto12]

And what if you relied on the Diana wolstead method. How many litres could it service then?

[@xcxxcx101]

I done like you said and my fx4 have bigger output then input... Every 10 min pump stay drained.... I removed media from bottom... Drained again... I returned my ceramic in middle then it drained again... Can you help me?

[@michaelmarantsr4895]

Can you run an inline heater with the fx4? Is there going to be a problem with the on and off cycle every 12 hours that purged trapped air ?

[@davidlaber4718]

My fx6 did come with the junk orange trays

[@steveodgers1120]

I just purchased a Fluval FX4 for my 60 gallon cube tank. I’m going to set up the FX4 exactly this way. How often do I need to change the Eheim Mech, fine filter pad & course and medium bio sponges? Thanks!

[@daveogmiles6152]

Whare do i put my purigen ritcherd

[@richardmachin6446]

Could you use the middle of the bucket for a bag of say carbon

[@paulraynes3271]

I'm looking a juwel lido 200 for discus and tetra I will be using juwel internal filter but whats the best external to go with what will give crystal clear water quality..

[@kayleighdavid2869]

This looks similar to my set up in the fx2, can you confirm if this is or do I need to do different sizes. I currently have a heavily planted betta sorority tropical tank set up the filter keeps stopping I’m cleaning so much muck out of it every 2 weeks, still on the original set up by fluval I’d like to try your way to see if it helps. Thank you

[@ThousandYardStare]

(my other channel) As far as I can tell the trays in the FX2 are the same size as the FX4 and it's just a re-worked version of that filter with less wasted space to allow it to fit into smaller cabinets? I don't know for sure but I've had a few people buy FX4 upgrade kits for FX2 filters and no complaints about there being too much media or too many foams.

[@newyork836]

hi , i have fx4 running with original media,and a tank with fish and coral ,can switch to the ULTIMATE MARINE AND FOAM THAT YOU HAVE ..Thank you for you answer ......

[@FuriedHearts]

Those foams dont look tightly packed in. I imagine water slipping by. Is water not directly forced through the foams?