The BEST DIY POND FILTER for CRYSTAL CLEAR WATER

In my opinion a bog filter is the best biological filter that the average person can add to their pond to achieve crystal clear water and an easy to maintain pond. This video and the linked resources should help the average person build the right size bog filter for their particular pond.
For helpful products and articles visit ozponds.com
Here's a playlist showing some of the DIY bogs I've made- • Bog filter DIY videos
And here's a link to a video on skimmers, intake bays and negative edges- • Pond skimmer vs intake... . It should give you a basic insight and probably contains links to some of these types of systems that I've built using cheap components.

[@maerten9517]

Actually, I rather like the longer format. For me, this one of your best educational videos as it had more information.

[@Ozponds]

Good to know 👍

[@999waves]

Facts

[@joshvalentiner29]

I honestly like the longer videos especially when they are packed full of information like this especially for when I'm doing a project I can reference 1 video instead of multiple videos! Thanks for the video!

[@Ozponds]

Good to know 👍

[@MIKEZGAMER-g8b]

blame the tik tok generation, they want it fast and snappy, we live in strange online times

[@Ozponds]

@@MIKEZGAMER-g8b it’s also interesting when you look at the analytics of a video. While most people commenting say they enjoy long form content the numbers don’t reflect that.

[@susanmyer1]

I agree!!

[@robertdalga128]

Same here! Thanks for another great informative video Kev.

[@mattr746]

I’ve made 2 bogs like the ones from your previous videos and both of them have functioned perfectly and greatly improved my ponds water quality….thanks a bunch

[@Ozponds]

Great to hear 😊👍

[@delarid]

Video is not too long. Currently building my own DIY pond with bog filter in my garden all with thanks to you for both the knowledge and inspiration. Even tho I have watched all your videos and already know all this information, each video gets better than the last and its great to have it all reinforced. A valuable watch. Cheers mate, from Ireland.

[@Ozponds]

I do feel like I repeat myself a lot, but it also seems to be the information people need to constantly hear, based on the emails I get. Once it’s like “I’ve heard this a hundred times”- that’s when you’ve got it all sorted 👍

[@MandyJane123700]

When I was gathering the supplies to put together my container pond last year, I watched several different pond channels. I had a collection of them, but none of them really seemed like something I could manage, until I found your channel (and the bog in a barrel video).

[@Ozponds]

I also felt like that when I started learning. But as we both, now know it’s not that hard and the rewards are tremendous.

[@claireoliphant7775]

I used your videos as a core part of my design process for my backyard pond and they were wonderful! In my design I have a pipe inlet at the bottom of my bog filter, and a cleanout pipe next to it. Both can be closed so I can avoid backflow if needed. My pond overflows into a short creek which serves as a secondary bog filter, and I have a 100 gallon water storage/pump pit at the end of that, so if the pump ever stops unexpectedly the backflow ends up there rather than the pond. In the nearly 3 years I've had the pond I haven't had to do a cleanout of the filter. Oversizing the filter set up and using your methods has given me a pond with very low maintenance, and a wealth of wildlife watching opportunities. Even though my pond is built and established, I still enjoy watching the videos. Thank you so much for sharing all the info!

[@Ozponds]

I’m so glad you were able to use some of the design elements I talk about and you still enjoy listening to me ramble on. Thanks for the support 😊👍

[@frankcanale3467]

The pump was a little strong so I added a T and valve to adjust the flow thru the bog. I have it running in test mode to make sure there are no leaks. I am happy with the setup and plan to add the rock layers next weekend when I return for my weekly visit to check on my Mom. I will keep you posted on the progress. Thank you for your videos, they have been a great help. Frank

[@richardportelli1983]

Love all your videos, your voice is very calming to listen to. Long or short they are all great.

[@Ozponds]

Glad you like them 😊👍

[@andrewf9673]

Having had problems with green water in my pond - despite using purchased pond filter with UV - I constructed a bog filter based on one of your designs. After 3 weeks the water is clearing and looking much better. Thank you so much for your advice and help and best wishes from Derbyshire, UK. Andrew

[@TheDrillMaster001]

OK. Sold. Your guidance is so good. I've mentioned before that I have a large natural pond on our acre of land that is now going through algae buildup on a large scale. We have leaves constantly decomposing in the water and nitrogen is doing what it does. I'm going to build a bog filter, but it's going to have to be pretty large. A great undertaking for this summer! John in the Other Melbourne (FL, USA)

[@Ozponds]

Good luck with your project. I’m jealous of the nice weather in your Melbourne.

[@ADA_BTC]

Never worry about the length of the video, i think it was very informative and i'm going to try to build a filter like that. Thank you!

[@saralynostwinkle6429]

U helped me make the most amazing designed pond!!!! This is year one and the pond is crysal clear!!!I so appreciate u! This info is AGAIN amazing. I will switch to these pumps! Again, thank u!

[@Ozponds]

That is great to hear Saralyn. I remember our chats. I hope you and the family enjoy the pond for many years 😊👍

[@saralynostwinkle6429]

Thanks for ALL your help on my bog filter. It has been running just this spring and its working!!!!!! All Algea is going away!!!! U r awesome!!!!

[@Ozponds]

Great to hear Sara. It’s simple, but it works 👍

[@yazidyusoff354]

Love your longer vids as its packed with more information and love your sketches of the layout as well to give newbies like myself a better understanding of the mechanics of it. A little bit more of the sketches wont hurt tho. Anyways great channel and keep it up. Planning to DIY my own pond soon as well

[@adrianmuszynski635]

Thank you for your work. I built the filter recently and after 3 days water in my pond was clean and clear. I’m shocked how quickly the filter cleaned water. Greetings,

[@Ozponds]

Great to hear 👍

[@ttt2969]

Thank you for the information. Your work looks great. The "long" format is needed.

[@Liithiumbob]

Thanks for another informative video Kev. Definitely not too long. As commented by others, the longer videos with so much valuable information are appreciated 👍

[@Ozponds]

Glad you enjoyed it. 😊👍

[@juliewilliams793]

Great video, not too long at all. Gives me confidence that I can do it! Thanks

[@Ozponds]

You can do it! 👍

[@colinwaldron7399]

As always Kev, another very informative video. Not too long at all. Thanks again.

[@Ozponds]

🍻👍

[@sweetkoiyo]

Excellent video Kev!!! Everything is explained beautifully in this video. You are the master of DIY Bog Filters! Thank you so much for sharing all your knowledge on this topic. ❤

[@Ozponds]

I’m pretty passionate about the subject matter. Hopefully it helps more and more people create beautiful water gardens in their yards.

[@francus7227]

Another enjoyable and informative clip. Thanks Kev. I tickled the thumbs up 👍 button to feed the algorithm monsters.

[@Ozponds]

Legend!😊👍

[@bangaujam]

Thank you for this detailed video on your unique approach to designing and building bog filters. I'm trying to convert my current down-flow "bio filter" (using plastic parts and foam filters) to an up-flow bog filter with rocks and pebbles. My current so-called bio-filter isn't working very well. Sometimes, the water cleared but most of the year, it is greenish with single-cell algae. Your advice on size, flow and ease of maintenance will help me in designing and implementing this conversion. Kudos. Subscribed. Thanks.

[@Ozponds]

Good luck with your project 👍

[@connieriddle5117]

Thank you - a big fan. Your ponds are beautiful. It has taken 8 months but I have crystal clear water. I'm not the brightest bulb on the tree when it comes to science and math, so it takes me a little longer to accomplish. I built a bog that may be too small ?? Put plants in it. Not even sure about the water pressure and the outflow gallons per minute but I watched, many times, the flow of your water from the beautiful orange pitcher in the little pond and duplicated that.Added river rock and some other items to help with beneficial bacteria. Finally after about six months or more the water started to clear. Actually did some water change. Added Nualgi . Still not clear. Then pvc pipe with holes drilled for water flow around the inside perimeter of my 4' x 7' x 21" diy pond. Using an extra pump. In no time at all the water quickly became clear.. I am thrilled. After almost three years of trying, you helped me have clear pond water in about 8 months. I couldn't be happier, Now I realize that water movement does make a big difference. THANK YOU

[@Ozponds]

Great to hear you were able to battle through. Well done 👍

[@larsstrohmeier2320]

great video, i also like the longer format because it has all the relevant steps in one go =) really excited, we are building our first pond right now, about 3000litres, and because of your input we decided to go with a bog filter - fingers crossed! ^^ thank you for all the very useful information!

[@Ozponds]

🤞

[@moomoon1410]

Grateful to this video ! Reviewing the basics and more!

[@robertcowie7393]

I have struggled to maintain a clear pond for several years and have tried several solutions. I finally built a bog pond using two 300-gallon Rubbermaid stock water tanks. Within one day of bringing one of them online, the water was almost perfectly clear. Now, with both of them running, my pond water is as clear as the ones shown in the Ozponds videos. Thank you for your step-by-step instructions.

[@Ozponds]

That’s great to hear. Well done 👍

[@SteveRenon]

We made one of these filters on the weekend. Works like magic. Thanks the fish are happy.

[@Ozponds]

Nice one 👍

[@ilkererden]

Best channel about diy ponds and their subsystems. Thank you a lot for your valuable experiences and sharing them with us.

[@Ozponds]

Thanks for your kind words and support.

[@evolveausevolveaus]

Thanks for the longer format Kev, invaluable info 👍

[@Ozponds]

Thanks for the encouragement 👍

[@kathrinepet7623]

You answered so many of my questions in this video thank you thank you.

[@daddymac2845]

Best info I found for a filter on the internet and reasons why . Thank you

[@Ozponds]

That’s very kind.

[@Lwimmermastermetalart]

Your videos are great. Things are actually so simple and not expensive at all. So many places want to sell you expensive filters . Loads of chemicals and so on. When all you really need is to imitate Mother Nature. Quite simple actually. I wish I’d have had all your information before I built my pond. I went through months and months of frustration until I got my eco system working correctly. I now have crystal clear water. Only small amounts of algae ( which the Koi nibble on ) and plants that grow fantastic. Inpatients in a bog grow beautifully! I have Lilly’s and cannas which are beautiful . Only maintenance is cleaning the muck out of the Jap mat on by bio fall waterfall. I have good sized Koi so there is a load of waste. I don’t use any chemicals, just add more bacteria time to time. You’re spot on and I love your channel 👍🏼👍🏼

[@Ozponds]

Thanks Lee. I’m really happy you are enjoying your pond again 😊👍

[@deansiddall3729]

excellent information once again

[@Furley293]

Hi Kev. Thanks for keeping the content and inspiration, flowing. And making the info crystal clear. ❤ I have a 500 gal pond with 3 koi and a few mosquito fish. I made a bog filter from a whiskey barrel. I've had it running for about a year. I cleaned it out a few weeks ago and was amazed at how much muck it trapped. But I still have green water. I bought two more 55 gal drums. Would you set them up to flow consecutivey (filter A drains into filter B) or have separate pumps for each filter? I put lava rock in laundry bags (in my filters) sitting on top of a milk crate. When i tried to clean it i washed it out for a considerable time, but i still had lots of muck in the barrel. So now I've changed it. Sending you love and gratitude!

[@Ozponds]

I feel like you could do it both ways. Basically as long as we have enough surface area for the bacteria, easy clean-out and the flow rate in the right ball park, you should get your water clear 👍

[@metamorphosis1541]

I think the flow through the blog may not have been slow enough.

[@jordierising4923]

I'm so excited to make my first of many. I feel really confident after watching your videos. Thank you 🎉

[@Ozponds]

You got this 👍

[@999waves]

Best diy pond filter video ever

[@wendymontie5660]

Finally got my Uniseals this week! Now it's a matter of building the bog filter (a plastic plant pot that's outdoor-proof) and setting it up. I'm using a solar pump, because it's a little 9 gallon 'pond' hard liner. Sadly, we don't have outdoor electrical outlets, so solar it is. My little non-filtered sink pond is doing great, as I have had the little solar pump up off of the base of the sink (there's pond liner in it). There's the biological matter on the bottom, but the water itself is clear. :) Thank you for your guidance and suggestions in your videos.

[@Ozponds]

Awesome. 😊👍

[@whiteboyphilly4016]

I made two for my small pond that looked like pea soup. In two weeks it was crystal clear. Thanks for the videos.

[@Ozponds]

Excellent. Spread the word 👍

[@bobginocchio1334]

Great overall summary -- you've gotten me excited to try one! Thanks.

[@Ozponds]

You should 👍

[@brendanukveteran2360]

Been watching - and rewatching your vids....thankyou for sharing your aquired expertese....just starting my own project and I am grateful for what I have learned...I wonder if the same techniques can be used to clean up politics

[@Ozponds]

🤣 don’t get me started!

[@jodyk4949]

As others have stated, not too long at all. Being my first DIY pond I want to have a good first attempt at the build. It could possibly save me from too big of a project to correct if needed. Thanks for an excellent video instruction.

[@Ozponds]

Glad it was helpful 😊👍

[@paulhoward979]

Brilliant advice Kev & personally the longer your videos the better for me! I really want to try a big filter and need to build one for my 1500 gallon pond, it’s just plucking up the courage! lol 😂 Thanks Kev 👍

[@Ozponds]

You can do it 👍

[@inganeerable]

I just finished building my bog filter after watching your videos. Thanks for the info. Do you have any feedback on how to keep the pond oxygenated adequately? Do I have to have the big outflow fall into the pond or can I pipe it down with no waterfall?

[@Ozponds]

Every ponds oxygen requirements are different. I know I’ve made a few on aeration/ oxygen. The general rule with the water leaving the bog is to have it cascade or splash back into the pond, the reason being that as the water moves through the bog, the oxygen content is being consumed by bacteria. Therefore we want to reintroduce oxygen. Hope that helps.

[@terrarosa8181]

This video is PERFECT! Lol. My mom has an above ground pool she's going to install. She's allergic to chlorine and hates maintenance. So I'm trying to get her to do a bog filter. She could also do a sort of aquaponics on it. I'm breaking down the prices rn and this definitely helps!

[@Ozponds]

Good luck with your project 😊👍

[@basilkey2949]

I want to thank you for your videos. I also went by your bog filter design. 946.353-liter tank. to a 3028.33-liter pond with a 15141.65-an hour liter pump. Nice 40.64 cm water wide waterfalls. It cleaned it from muddy water to seeing the bottom almost clear water in 24 hr.'s. I have the bog filter full of rocks and pee gravel. Then the 3 tubs for the waterfalls full of pee gravel for filtering. I did liters and cm so you head would not be in pain this time. A BIG THANKS.

[@Ozponds]

Great to hear. And thank you so much for the metric conversion 😂. My puny brain thanks you 😊👍

[@karlyoung9791]

Thank you for the informative video. I have been interested in building a small pond or water feature with a bog, and the information provided has given me the confidence to start this project. Additionally, I would appreciate a video on cleaning and maintaining the filter.

[@Ozponds]

Already done it. Just scroll through previous uploads. Good luck with your project 👍

[@sandyl1899]

Bog filter here we come!! Thanks Kev. 😊

[@rickryb4587]

Thank you for your videos!! After years of green, I'm going to try this straight away! The pond is 10' x 14', about 3' deep that houses 4 good size turtles. 2/3rds is below ground & 1/3 above. There is an island, so I estimate about 1,400 gallons. I will build a 250 gallon bio-filter off to the side. The top of the bio-pond will be higher than the pond, though the bottom won't be. The pump is 2,800 gph.

[@Ozponds]

Good luck with your project 👍

[@frankcanale3467]

Excellent video, definitely not too long. Building a bog filter for a 250 gallon pond with 5 gold fish for my 81 year old mom. She has had the pond for a long time but the small commercial filter is not and really never has worked very well. Doing a 20 gallon bog with a 200 GPH existing pump. Is this pump more flow than necessary? I plan to have the pump across from the bog filter return waterfall. Would you recommend a skimmer with this size pond. Thank you in advance, Frank

[@Ozponds]

It’s a bit strong. I like to 6x the bog volume. But my gut tells me it’ll be fine.

[@StraightOtohGunga]

Thank you for another great video!!

[@Ozponds]

Thanks for watching 👍

[@erichenpets676]

Great video Kev! Thank you. We are still working on reconstructing filtration for our 6000 gal pond. Previous owner used fish netting in two large tubs. Bog is better.

[@Ozponds]

Of course I agree 😉

[@erichenpets676]

@@Ozponds Thinking about using those tubs for bogs and then reintroducing the water over a waterfall back into pond. Years of neglect will need a major cleanout first mainly due to Lilly pads decay and growth.

[@lucasmeridius1525]

Love your very informative videos. I have learnt allot. One question, I am currently building an above ground pond and looking at building some filtration. So can you just have a bog filter and not have to have mechanical filter along side. It won’t have KOI but just gold fish etc…

[@Ozponds]

That’s pretty much what I do. I just use a homemade skimmer or intake bay to provide a pre filter to the pump. If the pond is under 1000L I’ll just plop the pump in a plant pot and use a course sponge to protect it from getting clogged.

[@lucasmeridius1525]

@@Ozponds thanks Kev. Ok will have work that out as I am building a raised sleeper pond so not sure I would do either one of them. My pond will be about 2300L

[@Ozponds]

@@lucasmeridius1525 maybe plonk the pump in something like a milkcrate with sponges all around.

[@sarahtuffery3697]

Hi, Well I have done it!! I have used a water butt - it has not been easy (a bit dim!) but it is up and working......just got to put in the plants. I love your videos and the length does not both me. How long do you think it will take to help the water? It is a large butt (2000 lt) but the pond is 18000 lt......Just fingers crossed this helps my kio and pond.

[@Ozponds]

It will just be patient. I bet you see results in 2 weeks. Let us know 👍

[@steveedwards3719]

Kudos on the good video.

[@janeencalaway1862]

Thanks for the information.

[@lindarackstraw7711]

Hey Kev. Love the video. You have inspired me to redo my pond. It was initially a great idea but! The sides go straight down. Big no no. From experience the mini cog’s you’ve planted are beautiful but they drop dead foliage underneath and it falls into the pond. I’ve noticed there is only one close to the edge of one of your ponds mine lined the whole pond Such a mess. Ill print out your pdf when im ready for working that out. ❤

[@Ozponds]

Yeah the mini cogs drop a lot of leaf material. Good luck with your project 👍

[@oots4790]

Good day Kev! Ive watched a lot of your videos on bog filters and literally began building one that is about 4 and a half feet deep, when I came across your video talking about how deep it should be at max. Do you recommend I try and make it shorter? (Bog itself is being made in an above ground 7 foot x 12 foot container. About 2500 gallon bog for my 6000 gallon pond) My only other question : when it comes to making a void / false bottom is something like corrugated drainage pipe snaked on the bottom sufficent (or even necessary? haha) Thank you so much for all your knowledge and expertise! I appreciate you so very very much.

[@Ozponds]

That depth seems fine to me. I’d prefer the void be something a bit more substantial if you expect a lot of waste to accumulate in the filter (large fish, turtles or ducks, ect).

[@oots4790]

@Ozponds Thank you for the reply! I appreciate the suggestion for something more substantial. To aquablock my large bog it'd be quite expensive but that is what I started off thinking about. While I don't expect an enormous amount of waste, (mostly fish and frogs in my pond) I would love to future proof it for something like turtles and ducks. You've answered and helped enough, if you're willing to reply once more what's a good aquablock substitute (if there even is one) I was thinking reinforced milk crates of some sort potentially. Unfortunately those aquablocks just can't feasibly be in the budget for me at this time. Genuinely wish you all the best!

[@oots4790]

kzbin.info/www/bejne/j6Waaad9gq1_bKc Think I found my answer lol. I thought you might appreciate such a random video too. Who knows. Thanks for all you do Kev! Truly wouldn't know what to do about this koi pond without your knowledge and help.

[@Techknowdude]

Awesome content. I'm working on an aquaponics system and lots of the same ideas relate. This almost makes me think converting my pool into a large aquaponics pond might work without having a green pool :)

[@Ozponds]

Aquaponic grow beds are the same as a bog filter, pretty much 👍

[@ishficici999]

Thank you for your knowledgeable guidance! I have a large size problematic pond that I will try to place the addition of a bog filter onto with your guidance from the videos. 😬🤞

[@Ozponds]

Good luck with your project 👍

[@kevinwhite1077]

nice video keep them coming

[@chausonharmon693]

I have a 5 acre pond with an average depth of 7 feet. Do I need multiple 750 gallon open tanks? I think estimate is 6.5 million gallons of water.

[@Ozponds]

I just wouldn’t be looking to filter a pond like that. Here we call that a farm dam. Look into something like floating wetlands if you have water quality issues.

[@StaceyRoberts-s3b]

I’m a newbie, I ran across your videos and I absolutely love them. I had a professional install my small fish pond with concrete around it. The pond is only 125 to 150 gallons. I am not able to keep the frogs and crayfish out I guess because we have a natural pond about 50 yards away. The small pond gets full sun until 3 PM. The water gets so green after 4 to 6 weeks I have to completely drain it and start all over. I went to my local “pet store” and that’s what they suggested at first. Then they said that I would never be able to have clear water because of the factors against it. Would you agree them? Or do you think it would be worth my time to do one of your homemade bogs?

[@Ozponds]

I’m biased. The bog will work!

[@bekc1626]

Thank you for this info! Do you ever boost bacteria by adding it in at the beginning to get it going right away?

[@Ozponds]

Sometimes. Depends on the pond.

[@julian.morgan]

Thanks for another great video -please could you comment on the plausibility of solar powered pumps or even make a video about them? I'm talking about pumps that would really only run effectively in direct sunshine and so not run most of the night. They may have a small storage battery that would run the pump for a short period after dark, but are unlikely to keep water flowing through the whole night. Traditional theory is that these won't work because nitrifying bacteria are oxygen dependent. Stop the water flow, you stop the oxygen, the bacteria die and your filter crashes. However, I have also read fish-keeping forum threads where people are asking what to do in the event of a power outage stopping their aquarium pumps/filters from running? It would seem that more recent research suggests that while bacteria/archaea can obviously only oxygenate ammonia and nitrites in the presence of oxygen, the absence of oxygen doesn't mean that they die - at least not quickly - but instead enter a non-active or dormant state, at least with regards to nitrification. They die quite quickly if allowed to dry out, but their die off rate is actually quite slow merely from lack of oxygen. Some suggest that only after 24 hours of lack of oxygen do you begin to get serious rates of die off. This of course is really intriguing for solar powered pond pumps for our filters, given that most of us don't have more than 16 hours of lack of light even in the depths of winter. Wondered if you have any real life experiences to share?

[@Ozponds]

Have you seen the videos on my solar pond and stream?

[@julian.morgan]

@@Ozponds Sorry no - I'll go find it!

[@Paul1510WB]

Hi Kev..I've made an upflow bog filter for my 175 gallon pond with a black plastic box....it's working beautifully thankyou. My only confusion is that by draining the muck from the bottom by turning the water butt type tap I've fitted at the base, will there a risk of washing out all the buildup of good bacteria as well ?

[@Ozponds]

No the majority are attached to the rock and pebble as long as it stays wet you won’t lose them.

[@insAneTunA]

I pump half of my pond water into 4 separate bins made from IBC containers that I have cut in half, those are filled with lava rocks and each bin has a siphon. When the water in each bin reaches a certain level the siphon drains the entire bin and the water goes back into the pond via a sump tank. The other half of the pond water goes through a vortex filter and a regular pond filter that is also filled with lava rocks directly back to the pond. I do not use UV lights. In each bin, called a growbed, I grow a variety of plants such as strawberries, chive, monk's cress, some flowers, reddish, and even a laurel tree. This system is called aquaponics. My system is a figure 8 setup, which means that one loop goes to the growbeds with the rocks, and one loop goes to the pond via a regular filter, but both loops share a single sump tank that is made of a single IBC tank that is buried into the ground. That is where the pump is situated. I keep it running all year long, even during the winter. I keep making improvements and recently I uploaded a video with an update from the system. It basically is a bog filter, the only difference is that the flood and drain system, that is how a system with a siphon like I have is called, helps to provide oxygen to the micro organisms and the roots from the plants, and therefore you can plant a wider variety of plants. It is a bit more complicated to set it up, but once the hard work is done it is easy to maintain, and to grow vegetables and fruits which you can eat.

[@Ozponds]

Exactly right a bog filter is basically the same as a aquaponic grow bed. Your setup sounds great 👍

[@insAneTunA]

@@Ozponds I think that you are doing a great job with your videos. So once in a while I go to this fish pond supplies store, and then I see these highly sophisticated mechanical filtration systems with rotating self cleaning drums and all sort of mechanical filters and energy wasting and microbial killing UV lights that costs thousands of Euro's, and I never get it why people even buy those things. My entire system is driven by a single variable pump, and at the pumping rate that I have set it the energy consumption is 55 watt maximum. And that is all the energy that my system is using. And like you said, crystal clear water. Sometimes I have some algae during the transition of seasons, but I am working on some modifications in order to keep temperature fluctuations within limits.

[@Ozponds]

@@insAneTunA sounds like a great system you’ve got. I think people just don’t realise how easy it is. Thanks for your support, it means a lot 😊👍

[@knotknots6601]

Thx - you gave me a great idea for an aquaponics update to one of my bogfilters 👍

[@insAneTunA]

@@knotknots6601 Aquaponics is not the holy grail, and it has its own issues depending on the local conditions. But if done right it can be a nice addition to any pond system. 👍

[@Wakeupandsniffthecoffee]

I made a bio filter with a 55 gallon plastic drum, basically like your diagram. I had it running yesterday and went out to let the ducks out and disaster had struck overnight. Apparently my first mistake was bullying it on the hardened clay I dug from the pond, but gave it about 3 feet high above the pond. Some time during the night it must have plugged the outlet and flowed over the top. This in turn eroded the clay underneath the drum and the weight toppled it over. The pump continued to drain the entire pond at that point. While the bio filter is a great idea, attention to details like a firm foundation and perhaps a secondary overflow hole would have saved it.

[@Ozponds]

Unfortunately I can’t foresee every possible scenario. But this is why I always stress the overflow needs to be oversized. Hope you get it all fixed up.

[@kathrinepet7623]

Can you use 2 bog filters one flow in the other before going to the pond ? Thanks for all the information you provide us in the videos.

[@Ozponds]

It’s something I get asked a bit, however it’s not something I’ve personally tried. I think it would work just fine.

[@knotknots6601]

​@Ozponds @geschichtentraeume I have a std. pond filter with UV followed by 4 small slightly varying design bogfilters(?) at different levels on one side of a mound with small waterfalls in between all filters (downflow where water falls into the filter, goes under a barrier and flows up to next waterfall through varying material and vegetation on top). 1 pump, the rest is gravity. I would think it actually could be beneficiary, as you get multiple aerobic - anaerobic cycles?🤷‍♂ Actually, I always thought the first step of treatment should be aerobic (like at a waste water treatment plant), to start nitrification NH4+ → NO2- → NO3- . So, I have a question regarding choice of pumping water from the bottom of the pond directly to the same conditions at the bottom of the bogfilter without aerating it first. Is the waterflow creating negative presure and actually sucking in air via the breather pipe or is there an advantage to keeping a more anaerobic condition, but with vast increase in surface area?

[@geschichtentraeume]

Hi Kev, is it possible to operate multiple bog filters in a row? Say one barrel is 50 gallons, the second barrel is 30 gallons. The water runs through both barrels before flowing into the pond again.

[@Ozponds]

I haven’t personally tried it but I can’t see why it wouldn’t work.

[@gwynnwhite4500]

I have converted my 50,000 l swimming pool into a pond with some fish and plants. I’ve created two small bog filters because space doesn’t allow the size you suggest. Will adding something like diatomix help with algae?

[@ChrisShortyAllen]

Those additives are not a solution to low filtration. Take care.

[@Ozponds]

It can, but is the bog filters new? If it’s all new you’re just going to need to live with algae for a while.

[@wethepheonix4329]

recommend using footage of what you are talking about rather than recycling footage. great information thank you

[@Ozponds]

Can you do my editing for me? It’s really time consuming.

[@DecoFlora-n3c]

Hi, I'm building a fish pond and right now I'm dealing with a problem with the wetland filter. I want to DIY it and I need some advice. Can I use fresh quarry stone for the bottom two layers of stones or is it better to just use river gravel?

[@sanfordlopez]

Thanks for your videos. I made a bog filter. The bog is a 70 gallon tub and my pond is about 1700 gallons. When I first set up the bog, the water went crystal clear after about 4 days and it stayed really clear for about 2 months. Then it gradually went back to allowing the fine particles to pass through, making the water very murky as it was before I installed the bog. No matter how much I clean the bog, it will not clear the water as it did when I first installed it. Is this because the bog is too small?

[@Ozponds]

Maybe, the bog is small. It also depends on what’s creating the fine particles.

[@sanfordlopez]

@Ozponds the fines are from not having gravity fed bottom drain. I have a retro bottom, pump fed and the pump grinds up everything to tiny fines.

[@Ozponds]

@@sanfordlopez sounds like you need some kind of mechanical filter.

[@AQUAGUYUK]

sorry to trouble you with this i do wonder if this bog /pond filter could be adapted for aquariums i only ask as been looking at your results for a while now and i have aquariums that use deep substrates and plants so wondered if this system could be modified to add more or a better filter to my tanks ,,,and advice would be appreciated and welcomed keep up the good work

[@Ozponds]

I believe it would be perfect. When I retire and I set up lots of tanks it’s going to be my method of filtering.

[@AQUAGUYUK]

@@Ozponds Thank you i may try myself your vids are inspiring

[@smittykoi]

Yeah I'm on eBay now getting my water plants for my filter bog 👍

[@Ozponds]

Nice 👍

[@MrJmhess77]

Hey, no fair! I didn't get animations in my bog build video! LOL! Update: My bog is working amazing. I discovered a small leak in my stream just before the water gets back to the pond so having to fix it today. GRRRR!

[@Ozponds]

Bummer. Good luck getting it sorted👍

[@Jesusisnumberone5740]

Look into using charcoal as part of the filter. Has tons of surface area

[@nswart2093]

I’m making my bogfilter. But a thing that anoys me is that the breatherpipe makes a loud slurp sound. Whats the best way to to get rid of that? Put the breatherpipe just under the waterlevel? Or should i add a nonreturnvalve?

[@Ozponds]

Under water would work, but first just try sticking a sponge in there.

[@d.w.evans1182]

Hi there @Ozponds, what are your views on Bakki shower filters? I’ve been trying to get an opinion on wether bog filters or bakki showers are the best, I assume they both do the same thing or are they both different? I’ve seen lot’s videos of koi keepers building their own showers and I’m now unsure wether to go with a bog or Bakki filter. My pond is approximately 6500 litres and has a mechanical filter, it’s got lots of plants and wildlife as well as fish but my water is dark, (I believe I have to much organic matter in it), so its not really a proper koi pond. My plan is to fit a skimmer with the water feeding the bog or bakki. Any advice would be gratefully appreciated thanks.

[@Ozponds]

There’s lots of different ways you can filter water. I like bogs they work, easy to DIY and blend into the landscape.

[@bingowashisnameo80]

Hey, I have watched a few of your videos on bog filters and was just wondering where you buy your pond pumps from? I am trying to find some that are decent quality that are 6000ltr a hour (I am in Australia also, Queensland to be specific). I am new to bog filters and ponds I am just trying to not buy a bunch of crap pumps to find a good one.

[@Ozponds]

I’ve been happy with the pond max evo range. If you buy them from rock around the block. ozponds.com/pond-equipment-australia/(here’s a link). Use code: OZPONDS and get 5% off. Hope that helps 👍

[@НиколайБондарук-й2и]

TY for your job❤

[@davidcox5250]

Should I add pebble to the bottom of my metal stock tank pond?

[@Ozponds]

It can provide more surface area for bacteria. But if you have plenty of filtration (like a bog filter) it’s not necessary. Depends on the look you are going for.

[@danielbello8947]

Do the type of rocks matter? I purchased a house with a pond and it’s had red lava rocks in the big filter. Water is looking green I’m wondering if changing these or adding more rocks will help

[@Ozponds]

Shouldn’t make much difference. Just sounds like there’s not enough.

[@elizabethdg]

I have a very high maintenance 5000 gal pond with two aquascape waterfalls connected to one skimner pump and a moving bed waterfall connected to a bottom drain. While the water is clear I still have a tremendous amount of muck on the rocks along the side and bottom. Every two or three days i have to hose down the filter mats positioned along the waterfalls. Its dirty, time consuming work. Is there any way I can add a bog without lisng my waterfalls? Thx!

[@Ozponds]

The simple answer is yes. Just run a separate, dedicated pump to the bog filter. It won’t clean your rocks though.

[@3_3645]

Do you have a video of how you filter water for an aquarium? I tried so hard to have a Japanese fighter fish i gave him or her a large tank yet i could never balance the water i really enjoyed watching it. A flaminco dance costume

[@Ozponds]

Same principles as a pond apply. Good biological filtration, if you want super low maintenance, establish a complete ecosystem

[@S0me0ne_S0meWhere_SaysHi]

You can buy bacteria from shops to get a filter working. Is this necessary or does bacteria naturally grow in a suitably designed filter?

[@Ozponds]

It grows naturally. It’s a funny thing I sometimes think there’s a benefit to adding bacteria or at least some filter media from an existing healthy pond or aquarium.

[@scottdaniels3033]

Good video

[@Ozponds]

Thanks mate 🍻

[@davidschaffrick3961]

Do you need bio balls or a filter screen in barrel with rocks for bog filter? Also in ponds I see bubbles coming up usually in middle of pond...what is that?...I thought that was pump, but in video you showed that the pump was in a different spot.

[@Ozponds]

You don’t need bio balls or filter screen in a bog filter. Bubbles are created by an air pump (outside the pond), there’s an airstone or diffuser on the end of a hose/tubing that creates the smaller bubbles.

[@davidschaffrick3961]

. thank you for your response. what kind of air pump would you use for about 1000 gallon pond? Where do you get them?

[@Ozponds]

@@davidschaffrick3961 I don’t but them based on the volume of the pond, I buy them based in depth. The deeper the pond the more powerful they need to be. I get mine on eBay.

[@vvoss2805]

I have used papyrus in a bog filter with rocks only. The plant doesn't look as good as its potted version, it needs soil. Thanks for the info

[@Ozponds]

I’d remove it anyway, if it gets going….those roots are full on.

[@SherrickDuncan]

Will this work with a muddy looking pond lined with sodium bentonite clay rather than with plastic or rubber liner?

[@Ozponds]

I depends on how much sediment is floating around, clay can be notorious for refusing to settle.

[@SherrickDuncan]

@Ozponds what if I put sand down before adding water like the Fayher Fish tanks but in a pond?

[@Ozponds]

@@SherrickDuncan nothing will stop sediment accumulating. It will get stirred up if there’s movement in the pond.

[@dcpathberiya]

Can we use a big filter for a swimming pool

[@Ozponds]

Many people do.

[@JakeHe-c3k]

Hi, is it possible to build submersible bogs filter? I have a water fountain. There is no external pumping. What kind of filter do you recommend?

[@Ozponds]

You can, but it still would want to be sized correctly.

[@leohorishny9561]

I am having a new issue with my bog filter I can’t figure out: the pump drains my water feature, but fills up the bog filter with that water despite the overflow pipe draining water. It ran fine for a couple days, after restarting the filter for spring, but today it's started this pattern. I’m stumped.🤔

[@Ozponds]

I hope you get it figured out 🤞

[@dez3940]

nice vid. could i sed you some pics and get your opinoin on a layout ?

[@Ozponds]

I don’t really have time to help people one on one. Therefore I try and focus on videos and articles that can help lots of people at once. I have vids on layout, hopefully they can help you.

[@ErossaanBooming]

What type of rocks to put in the rog filter ?

[@Ozponds]

Anything that’s cheap or I can get for free.

[@chal9230]

Thank you.

[@ryantait177]

thank you

[@skiphardin7259]

Will a bog filter work if I don't have fish?

[@Ozponds]

Yes

[@silicondave2797]

Fix the typo in the title please. "crystal". Make a great weekend !

[@Ozponds]

Thanks Dave 👍

[@Allthingsni]

I have a large natural pond in my house that my Hubby & I purchased….. I know nothing about building this do they sell these 😮😮😮😮

[@Ozponds]

There’s lots of pond filters for sale, natural ponds are different to fish ponds. What’s required depends on what the issues are. You’ll either educate yourself or hire an expert.