Week 21: LED Reef Lighting: Tuning PAR, Spread, and Spectrum. | 52 Weeks of Reefing

It's Week 21 of 52 Weeks of Reefing, and this week we are premiering the highly anticipated LED lighting video. This is the week you have been waiting for: LEDs.
#BRS160
We are going to start with the general pros and cons including why so many reefers have gravitated to LED’s over the years, evaluate LED in general based on the same criteria we used on T5 and halides, discuss what you should look for in a LED option, and breakdown of some of the most popular options and finish with how to tune your LED’s PAR, spectrum and shimmer.
So follow along, and be sure to let us know about your favorite lighting in the comments area down below! Thanks for watching, and stay tuned for next week's video where we uncover which lighting system we chose for the BRS160.
Legal Stuff
The purpose and content of this video is to provide general information regarding the products and their applications as presented in the video. Aquatic sales solutions, inc. And its officers, directors, employees and agents disclaim all express or implied warranties, in any way, related to the products and their application as presented in this video, make no representation or warranty regarding the products and the application as presented in this video and shall not be liable for any direct or indirect losses or damages of any type, including but not limited to punitive damages, or from personal injury or death resulting from or in any manner related to the video, and the products in and contents of the video. The viewer expressly agrees that aquatic sales solutions, inc. And its officers, directors, employees and agents shall not be liable for any damages or losses related to the products in and content of the video and hereby agrees to hold the foregoing harmless from any such losses or damages.

[@davidk3852]

After 7 Years, I would like to see what these 3 Lighting overviews have changed at all. In fact, this whole project would be interesting to see how much of the technology has changed. This is still a great series for the new to reef community!

[@Forgetii]

Once again you've blown the doors off the competition. You continue to provide us with premium information regarding all things "Reefing". I've been thinking quite a bit about adding Kessil lights to combo with a nice T5 setup and you've helped me make my mind up. Thanks again for all your hard work and all the time you have put into making these videos, week after week. If your loved ones are missing you a bit more well comfort yourselves in knowing your efforts are not in vain. Thank You, Dave Davis

[@jasekevens9954]

As a reef veteran of 24 years, I want to thank Ryan for being honest and straightforward in the description of pros and cons in LED's. I agree, yes they work, and yes for the reasons mentioned they are not plug and play like a 250 w Radium bulb for example. Good work fellas.

[@thetharrington]

Thorough and fair, and the discussion of PUR with the real-time, multi-visual demonstration (including tank shot) of the relationship between PAR, PUR and spectrum was particularly appreciated.

[@slipknottin]

That you are not only able to test/compare but are willing to do so is a game changer for the hobby.

[@CapeFearConstrictors910]

I've watched all the videos in this series multiple times now and have to say I'm amazed at the knowledge factor alone, much less the entertainment value. Thanks to Ryan and BRS for putting this amount of effort into distilling a complex subject down at their own time and expense! My last reef tank was a 75g in college and 20 years later I now have the space (and budget) to do a solid build. Although I have friends in the hobby they all have their opinions as you'd expect so it's great to hear the straightforward approach here!

[@CapeFearConstrictors910]

Got tank quotes last week for 72x30x27....just need to get an order in to you all for equipment and supplies!

[@dsedean]

5 years later.... everyone loves LEDS! :D

[@eliavedri7876]

Wow! Watching this video definitely makes me realize how far LED lighting has progressed in 5 years. I'd be happy if you make a more updated video, I'm sure the scores will go up!

[@tonyroma1161]

You guys are really a great company

[@Hustler_king801]

Ppl

[@mrdouglasbaker]

So true! If everything is happy don’t change anything!

[@felix_gretarsson]

I have to say that this series are just taking the hobby to a new level. Awesome, detailed information. Thank you guys :)

[@robertstannard3805]

As a FOWLR aquarium veteran, but newbie in reef aquarium keeping, I have learned a great deal from watching the BRS videos. The BRS 160 series is a full course in reefing, covering all of the most pertinent topics. As for LED fixtures, I started with 2 AI Hydra 26 HD's on my Red Sea Reefer 350 (47' tank). I loved the form factor of the fixtures, and the unlimited control over both spectrum and intensity. However, I found spectrum control to be a double-edged sword in terms of the challenges it presented in finding the right spectrum settings. I just switched to 2 Kessil A360 WE fixtures, and so far love the simplicity and amazing results in my corals' color and health in just the first couple days. I don't know whether that is a result of my poor selection of settings on the Hydra's, or the incredible quality of the Kessil's, but so far, I'm very pleased. And the shimmer of the Kessil's is just unmatched by any other LED fixtures I've seen so far. Thanks for another great video, Ryan.

[@stephentobias7416]

I have absolutely loved these... It is must see TV!!! I started my first reef aquarium on November 22nd and am in the process of cycling the tank. Every episode has been packed full of what, how's and why's. Thanks a lot!!!

[@eddieray8240]

Another really great and informative video!!!!! Wish you guys were around twenty years ago!!!!! Would have made this all a lot easier!!!!! Thanks! Eddie

[@camryds]

I'm addicted to watching this channel =) This service that you guys are providing is awesome!

[@daw4u]

But seriously, thanks BRS. You rock cos that video is a money saver

[@JC-bs2ov]

Most informative LED video I have seen by far. I was not surprised by the PAR of Kessil but was very much surprised by their low range UV-A; definitely food for thought.

[@YoBetsYoBets]

Definitely the week I've been waiting for. I wasn't completely happy with just T5, so I purchased 2 Kessil A360w's. After watching these past couples weeks on lighting, I've decided to bring my T5's back and use both!!! Thanks BRS!

[@YoBetsYoBets]

+BulkReefSupplyCom I sure do! Where shall I send them to?

[@matthewschneider3897]

Thank You for taking the time to collect all of this data and provide it to us in a very accessible way!

[@Reeftanknology]

I wonder is there is a tool to measure the impact that Bulk Reef Supply has had on the Reefing industry??? No question that the readings would be off the chart! Way to go BRS!

[@starfighterusscv-6693]

The hobby started with Martin Moe, then evolved with Sprung etc. I'm not sure about the industry. I'm more into the love of the hobby.

[@JohnJohn-hv4ef]

For the past 2 weeks I've been struggling to make the right decision about choosing the best lighting for my new tank, and with all the information out there I was so confused. This video answered every single question I had and many more I didn't know I had. You guys are really great and you helped me make a decision. I'm going with a combination of kessil and T5. The kessil for it's beautiful, blue shimmer and the T5 to bring out the reds and the pinks.

[@420pigfarmer]

I'd love to smoke a bowl or 5 with this guy!

[@mrdouglasbaker]

Pig Farmer hit our Shatter Blaster

[@junito1957]

YEA MAKE MINE CAPTAIN BLACK CHERRY

[@garyinco2637]

Very informative video. My LED has mystified me. If they're not burning, they're browning. This gives me some new info to work with.

[@garyinco2637]

+BulkReefSupplyCom It's a reef breeder 48" light. I checked my par values and was showing 250-350-400 around the tank. Shuffled some corals around and I think the colors are returning. I'd heard of people having 500+, but thanks to your video I know know 250-350 is not bad.

[@DarkWarrior-fj2rl]

Great video as usual. I've been using LED's for nearly 5 years now and have found that after about 4 years most LED's need replacing. I have just replaced all the leds in my units as i'd noticed I was nearly 300 par down from when they were new and friends with other popular makes have noticed the same. If I were to buy another led light I would only buy brands where you can change out the LED's as they don't yet have the longevity that some claim. On my next tank i'll run a hybrid LED/T5 unit as LED's can be a bit harsh for some corals. Hopefully over the coming years things will improve but from my experience LED's alone are not the best. Also if you're going to purchase 2nd hand led units that are 3-4yrs old I wouldn't bother as unless you can replace the leds they are virtually bin fodder.

[@mrdouglasbaker]

DarkWarrior 0304 good info

[@ryanmcelholm]

man a wish you posted to the UK, thumbs up on this series brs 160 has been good to follow

[@daw4u]

As I always thought "since I don't have a tank yet" Kessil is king, and l made up my mind. My new 1.8 meters tank will have an a 5 foot ATI 4-6 bulb in the center with 8 Kessils around it. You know, it's 3 feet deep.

[@omarrascon4872]

i just binged the whole series very helpful keep up the good work!

[@juliecrouse863]

I'm new to the hobby and found the videos very enlightening (pun intended). I watched this particular video a few times to absorb the very useful information. I feel like I have a better handle on lighting my mixed reef tank. Thank you for the very informative video series!

[@EnterpriseCV]

You were not kidding about stuff selling out from BF sales right away. I was all ready to get a 60" Giesemann Aurora, and bam, gone. I am sure you will talk about it next week on the hybrid episode. Really nice series.

[@ArrickthaRed]

Great video. I went with kessil 3 years ago after using MH for years but got tire of bulb changes and battling heat in the summer. The thing I liked about this video is it gives you all the variables that I considered back then but I was guessing but I chose kessil for all the reasons you highlighted proving I have great common sense. That being said if money were no object I would still supplement kessil with some T5 because LEDs are still a little lacking when it comes to color in corals but in 3-5 years I don't think it will be an issue.

[@danielschultz8084]

The second I saw this video I was so happy to see what you guys did, and I have got to say very impressive. I love your channel; keep up the good work!

[@andrewhales9771]

Absolutely LOVE Bulk Reef Supply. Thank you for taking the time to provide us with the best information and products out there. Your hard work is being recognized. THANK YOU!!!! Ps. Love the long videos and can't wait to order my Christmas gifts from your black friday sales!!!

[@MicahRasmussen]

Mind Blown.... I've heard so much bullshit in the reef shop I work at. Thanks guys!

[@timbox74]

Love my 3 Radion XR30 W Pro's over my 160... great lights, great par, shimmer is amazing and completely controllable via my reeflink or website.. EcoTech all the way, their Vortech MP40's and the QD's are also amazing...

[@clsanchez77]

+Tim Box My tank is new and I am on the fence between the Vortech MP40s or the new Apex units. EcoTech has the batter backups and this has me leaning their way. Do you have the batteries? Looking for some feedback on how well those work.

[@timbox74]

Christopher Sanchez I don't have the battery back ups, but after last weeks 8 and a half hour power cut, maybe I should :-), I can only say that I had 4 Hydor Koralia's Evolution 4000 to achieve what 2 MP40's are doing, the Hydor's were great but clicked a lot when being switched on and off, hope this helps..

[@1MartinWaite]

Personally I hate the MP wavemakers to me they are over priced and I'd much rather have a gyre which far surpasses the Ecotech wavemaker which doesn't allow for directional flow whilst to some the wire outside the tank is nice I think it looks awful and their magnetic ability or should I say disability leaves loads of room for improvement. Even the new puck style wavemaker is a vast improvement over the ecotechs at least they have a 15degree directional flow for aiming the flow at the rockwork so detritus cannot build up.

[@jasonk2947]

Martin Waite I have 2 mp40s on a 180 bare bottom Acro dominate and they kick ass! I’ve never tried the gyre so I can’t compare...but I really like my MPs

[@charlesgilliland532]

Like always. Great information presented in an organized concise manner. Keep up the good work

[@davidrichard451]

love you guys.and fix the sound

[@sezles1]

And ....BREATH! (Yes I know editing) Good easily understandable info and review.

[@PSCThrillSeeker]

Nice segment on LED fixtures, If I had to chose I'd go with the Kessil 360W. But for my new tank I'm actually leaning heavy toward a Metal halide/T5 combo. Great job Ryan!

[@sigururorvaldsson1560]

Great video thanks

[@jameskuzma9868]

Thank you thank you thank you! So many questions answered, Im very grateful.

[@andrewsnyder3359]

very good information, thanks for the time to put this one together.

[@sbaldwin1984]

I'm running the AI prime on my 29 gallon bio cube and it rock's.

[@thorep]

Great videos, very detailed. The presenter is well spoken, and also the owner of this amazing store. Do a video about yourself too:) would love to see

[@travissavant3869]

Been waiting all week for this one!

[@tsurro8086]

Probably ur best video, but I would like to add my 2 cents, my 55 gallon, 48 x 13" tank , I was going to get two xr 15's, I called ecotech and they told me that they wouldn't recommend two for that size tank, I thought that they would cover a 24x24 , but they don't believe that, also not in the video, is that LEDs get weaker as u use them, also from ecotech, so even if u have them at 40% you'll have to turn them up the following year, so I bought two Kessils, the only thing that no one ever states is that these lights will not go below 10%, no matter what the spectral controller says, they just won't work at a lower level, so dusk and dawn is still pretty bright, but I will say that I had a problem with both, made a phone call and they sent me two new ones as a replacement, great stuff!!

[@mehkipolo3079]

Wow, this was very helpful

[@ReefRealEstateInCanada]

So he had that with the AP700 or with the others you mentioned. And by the way thanks for the quick responses. I am very jacked about getting a custom made tank. I have researched and researched everything just want to make sure on the lights.

[@joseCalderon1976]

T5/LED combo like two Kessil's (or one like in my case) with an ATI T5 fixture is the best of both worlds.

[@cesg]

Great video, really helpful finally understood the thing

[@clsanchez77]

Ryan, another great video!For my tank (the CLS 110), I already have four Hydra 26's. I have these spaced at 12" on center with the two pucks arranged front and back. I picked these up on sale at a local shop. I have a lot of PAR and will probably run them at half power. I very much like the spread, but I still see visible shadows in the front of anything I put in the tank. Now, I don't want to jump ahead of you on next week's video, but I was already thinking I may need some lighting along the front and back glass to eliminate some shadowing. I was thinking either DIY HO retrofits, one 54W front and another in the back, probably using Blue Plus bulbs. This is much like we used to do in the MH/VHO days (showing my age) and you have hinted to this several times in the video.But, the reason I was asking now, instead of waiting until next week, is would a DIY actinic LED kit accomplish the same thing? or fall short? In another words, would LED pucks with LED supplementation be as effective as LED pucks with HO supplements? I am thinking a 1.6"x48" heat sink with 24 LEDs and wide optic lenses (80 degrees) and using a mix of Royal Blues and Blues and a few UV, would help bleed out some of the shadows. One if the front and one in the back. From a coral health standpoint, would this work? Or should I wait to see what you have to say next week about mixing LED's and HO bulbs?Still sanding, painting and staining the stand, so time is on my side.Thanks :) Chris

[@scubascott1098]

that episode was epic!

[@luizmakesvideos]

What a great video, great explanation!

[@jericoreyes24]

Amazing work guys. this is the best video I had ever seen in any topic about the hobby. I wish you can make a same comparison review about the protein skimmers you carry. thanks

[@jericoreyes24]

+BulkReefSupplyCom yes I always watch your 52 weeks of reefing video. I have seen the video about the skimmers. I am particularly interested in how much better are recirculating skimmer compared to the single pump pin wheel ones. I have seen in your video that you have a testing tank setup for comparing skimmers. but you didn't went on details about skimmers the same way you did with this Led Lightning video. thanks a lot guys.

[@mxsnow145]

Good work on this vid, this is the one everyone was waiting for! Now if we could just get a pump vid of the Vortex mp's. :P

[@luizmakesvideos]

I'd like another one of these videos with the cheaper LED options; I'm trying to find the sweet spot on the Aquamaxx Prism.

[@0311-USMC]

With a limited budget, and the focus being on "beginner" reefers wouldn't it have been a better idea to review cheaper options that beginners would likely go for? or are we just pushing brand names?

[@AshImprezaTV]

Please could you do a video on kessil 360x with narrow reflectors. Tested height and par results please 🙏🏼

[@reefdoc7328]

grea video, since getting my apex par meter, I have been searching for what is the right par for corals and this answers it, thanks

[@1MartinWaite]

Shame that you didn't include the Focustronic 1 or the new Focustronic 2 which both get over 1000 (yes thousand) par and the ability to rotate the puck 24 degrees to the left and the same to the right the new Fucustronic 2 also goes from front to back this enables you to reduce or eliminate the shadowing that you get with other lights. The Focustronic 2 also has 2 strips of leds to help spread the light across the tank.

[@1MartinWaite]

@@BRStv firstly thank you for your reply. I can understand what say about budget ect yet you included 2 lights from the same manufacturers of which I can understand to a point due to their popularity but it would have been nice to spread out the different manufacturers and show what you can get nowadays to help with shadowing and light intensity. But on the whole it was another great informative video. Thank you.

[@pimpmytrade]

Simply fantastic. Another great video from this eagerly anticipated series. Quick question - were these par ratings taken with the intensity dialed all the way up to 100%? -- edit -- I continued watching and it turns out you did mention this. The tests were run at 100%.

[@OsirisDOA]

I would like to see how the Aquaticlife Halo LED stand up the the Kessil A360 as they both use an LED array structure with a single glass lens to blend the different LED together. I can't decide between the two for my tank. P.S. I love the black Friday sale that's going on right now. You Guys Rock!!

[@joshua_madison]

Another quality video BRS team! I eagerly await the brs160 updates! Any chance you could throw a Hydra 52 HD up on the test cube to grab some PAR numbers? Happy Reefing!

[@joshua_madison]

+BulkReefSupplyCom Great! I am planning a 52HD w/ t5s over my next build and am close to pulling the trigger. Basically waiting for the next BRS160 video...

[@austinchilders4955]

Can't thank BRS enough for putting all this information together, I look forward to every Friday going to my "aquarium class" on youtube, your proof that a company can be successful without jamming all their products down your throat and just be honest about what you need and don't need. Is their a chance you guys might be doing a video on DIY leds such as the CREE's and meanwells, I know that's not really an area that BRS has dove into but I just picked up a Seneye from you guys and would really like to fine tune in my leds . If not is there a recourse like a website or book that you use so that I could get a better understanding of PAR and spectrum other than chasing a spectrum curve and PAR number. Again thanks there is a reason why I don't buy from anywhere else!

[@joshp9964]

sounds great. thanks

[@TheGroove834]

Great info! What is the discrepancy between the Kessil A360W tests with PAR of ~185 @ 6" in the test tank and the PAR of ~750 reported by the Seneye later in the video? How far was the Seneye from the light?

[@emmanueljamir]

What's the recommended duration of keeping the lights on in the tank, with or without coral? Should I turn it off a night or dim it really low for a moonlight effect?

[@Amichelsent28]

love these videos. I am not that satisfied with my A360w though . I think hybrid is going to be the way to go.

[@SanjitLucksman]

hi there ! Am Using DIY LED lighting for my (4 feet, 20inch height ) 90gal tank - 72 x 3W LEDS with 90 degree lens ( 20 Cool white ,40 RBlue ,4 spectrum pink,2 green , 2 red , 2 violet and 2 UV) fixed 12 inch from water level Looks rely rely nice coloration and little purple look. but my Anemones hiding and slightly get bleached even water parameters and perfect condition and also feed them Using hikari Coralite twice weekly . am i having too much lighting ? or too much white ? can u help me ?

[@SoulJimyDark]

Thanks for the info :)

[@javochz]

I have a Radion rw15 on a 29 biocube running 65% on radiant color setting but it looks as if its not doing my corals any good. Should I increase or lower the intensity? Any help would be greatly appreciated.

[@joelm7738]

Hello I have an eLive LED tract in a fish only tank but i am looking to add soft corals and possibly SPS or LPS if I have success with the softies. My question is has any one used this lighting system and what is the review associated with corals. Also I have the 30" track and i have added 2 high intensity lunar blue and 2 high intensity cool white pods.

[@milesevans2520]

Would the Kessil ap700 be enough to grow corals in a 30x30x30 tank or should I stick with the 24 in ATI 8 bulb fixture iv been looking at for a while?

[@karlek110188]

this might be a dumb question but are the 6",12" and 18" PAR measurements over the water line or the PAR meter?

[@ReefRealEstateInCanada]

I plan on both so was thinking, the soft and LPS near the bottom SPS in top 24 inches. Would love to see the PAR readings at 24" ,30", and 36" before I buy it. Will I experience corals dying on the bottom with this light or just slow to no growth. What's the min. I can have for say a nice Brain coral in the sand bed. If I have to add a light I could between I guess.

[@SSS-mp8th]

While I understand why you tested the most popular mainstream brands it’s interesting that they are all puck style. A number of the direct internet providers make units that have a large number of various color LED modules which give you full tank spread as there isn’t one or two light points but 10-20 or more depending on the length of the unit.

[@SSS-mp8th]

+BulkReefSupplyCom Absolutely they don’t’ have the slim form factor or wow factor of the puck varieties that seem popular. If the lenses on the module have good spread and you mount them 6 or more inches above the tank you can get good effect. I’m using a 24” fixture on a 30” tank with 120 degree lenses and run a max of about 30-40% power if I use any more my corals don’t like it. I appreciate you guys putting these videos together, they are very useful. From just watching this one I’m going to up my blue channel and dial back my white throughout the “day” light cycle.

[@SSS-mp8th]

Reefbreeder Photon 24

[@pmrossetti1]

Great videos guys!!!How about one on OZONE?

[@jjmurtaugh4956]

Did or can you run the test with the Ecotech G3 Prob but with the wide angle TIR? Chad told me he always recommends it and never using the light without because of the power. I was surprised it wasn't in the video and hope to see if that evens it out. Thanks!!

[@smohr123]

A few questions about the studies: 1) how far away from the water was the light fixture? 2) I'm assuming 100% intensity for all of these fixtures during the test?

[@ronnybello909]

I love my leds better than t5 bulbs. In my opinion led are better but make sure you do your research. And they do here in this video.

[@TheRealRognin]

So what you're saying is, four 54w ATI T5's plus two Radion G3 Pro's at a 24 inch water depth might actually be too much. I need a par meter now....

[@joaocdestro]

Great Video!

[@justinrasmussen8325]

Speaking of LED fixtures. Has there been any word on the next generation of Vertex Illumina? I haven't heard any news since the European trade show a while back.

[@josephberthiaume]

These videos are making me want to move to Minnesota and work for you guys. Need an electrical engineer?

[@joshp9964]

great video guys. wish the AI prime was in it though. keep up the great work.

[@TheDaddy2003]

Why did you use the xr15 pro and the hydra 26's as the examples for testing? I would of rather seen the comparison on the bigger models 52's and xr30's.. Also even spread on bigger systems would of been better discussed. Great quality videos as ever though so thanks for the details. 😊

[@TheDaddy2003]

I just meant I think u should of used the 52's and 30's 😊 That was all and excluded the smaller models. Great videos always look forward to them, myself and my gf love Watching ryan 😂

[@jeffklaubo3168]

do you have 2 cents on the current usa orbit marine pro? I bought one, then moved so never set up my saltwater and have honestly been using it on my African cichlid tank. seems like a good light, but seems cheap compared to this list

[@OCNcheffy]

Do you find that with the AI Prime, cranking the whites creates a dust algae on the glass?

[@marclibert8510]

What lights are used on the tanks at 37:15? I was surprised that the par is so low. My LFS told me sps should have at least 350, apparently the range is wider. I'm running 2 kessils w/ T5s so I'm trying not to burn my corals, thanks

[@marclibert8510]

+BulkReefSupplyCom My mistake, I meant 14:59 the two tanks

[@sp00ky1969]

It would have been interesting to see the PAR charts for the Radion XR30 when using the wide-angle lenses.

[@michaeles79]

My problem is I have a 90 gallon with a crossbar in the middle of the tank. Want to go to led but idk.

[@frostedtangerine6898]

I want to set up my first reef aquarium and I want to have a really close look at all my coral and fish so I want to start off with a very narrow tank so I have all the corals near the glass but I want it to be really long to have space for coral and water volume, I'm thinking a 30 gallon that is 48x10x14tall, maybe I'l add a sump with a refugium larger than the display to be able to try out different macroalgaes. What LED can I get to fit a tank that shape? Would it be a better idea to go with a single t5 to fit the sape of the tank better? Or could 3 kessil A80s be enough? Thanks.

[@frostedtangerine6898]

***** cool thanks, I love your channel and your answers are really useful, thanks, keep it up!

[@tkotanko]

when you calculate the depth. is that from the light or from the waters surface (i.e. my radion's hang approx 12" off the surface).

[@tkotanko]

+BulkReefSupplyCom Thanks for the info. I'm now looking to get t5's again as a supplement .... your video's are too informative haha..

[@joshp9964]

so I need some help. I have a 29 gal bio cube and ai prime. the prime is 8 inch off the water. how high can I go with the cool whites. my local store said 28% any higher would burn the coral. I see a lot of people running 50%-100%. what's ur thoughts?

[@joshp9964]

+BulkReefSupplyCom they'll do it for $35

[@04jaywilli1975]

Great video, very informative. I'm starting a 50 gallon rimless in a few weeks. I'm planning on having mainly coral, and just a few fish. My question is, what would be a good Offutt for me? I need something that I dint have to worry about, while I'm at work all day. programmable I guess what I'm needing but not sure.

[@madrox4132]

Well shit, should have waited a couple more days to order my RO/DI system

[@gerarddonnelly8703]

I am stetting up a 40 gallon breeder reef tank. Would the skimz sn143 protein skimmer be good for it.

[@ReefRealEstateInCanada]

I am just in an internal battle with the lights. I really want the AP700. Am I better off with the AI Hydra 52's? Or go AP700 then have the N series Kessils in between the two of them. Man getting pricey.

[@bif24701]

I would like to see the Kessil AP700 head to head vs the Radion G4! How about it BRS?

[@nickmarchese2992]

how turned up were the hydra 26 hd? And how high above the tank were they hung?

[@girishpatil7201]

i had choose 2 maxspect 160w 5.5 long tank tell me the ideal hight for ficture and proper programing

[@madweazl]

Were the Kessil 360s the WE or W model (W best I can tell from the video)? Also, were they running 100% color and intensity for the benchmark?

[@teddy00024]

How about color? Was color also set to 100%?