Hold my Beer......
I can assure you Mars Aqua can and will produce great results if used correctly. I have a 150 gallon Acro dominant tank with over 80 pieces and have used (4) Mars Aqua boxes since day one. The tank is a little over 14 months now and everything is doing great. I also have (2) on my frag tank as well.
The key with these boxes is spectrum. Most CBB's including Mars have too much white. What you want to do is remove all white diodes from the white channel except for around 8. The rest fill in with 440-450nm. Also, replace the greens with 490nm CYAN's. This will allow you to do a 50/50 on both channels and give a good 14k spectrum.
I have my Mars Aqua hooked into my Apex for dimming and it works great. These paired with (2) 80w ATI Blue+ T5's is giving great growth and color.
Besides the spectrum the only issue I have with them is the newer Mar's have COB diodes which are very time consuming to replace. Viparspectra's are the standard 3w diodes which make it much easier to replace and they also have a couple of UV diodes already on the blue channel which is a plus. Going forward I will use Viparspectra just because of the ease to replace the diodes.
Do not listen to those that say these will not grow coral. They have either never used them(or used them correctly) or is just repeating what BRS says as the gospel.
See videos below. These lights put out a crazy amount of PAR. At 100% blues and 80% whites with (2) T5's I was getting around 1500+ PAR at the tops of my rocks. I had to lower my Blues to 40% and whites to 30% to get around 800 at the top and around 350 at the sandbed.
Look at my build thread and on page 9 is where I changed out my Diodes.
Build Thread - JCOLE's Big Box of Rocks
Completed layout over frag tank on new light. Spectrum looks really good. On my DT I am going to use this layout except I will change out the 4 7500K diodes for 20000K for a crisper white. These are the newer Mars Aqua boards with COB diodes so I had to get a little creative. Prepped and...www.reef2reef.com
These lights average around 130 bucks on amazon. I got 2 for 85 bucks and they shipped in 20 minutes! Said 2 weeks for shipping but I simply can not believe they will take that long at the rate they shipped. I think it’s worth the try and you guys have beautiful tanks with these. I have a large dining room and I plan to hang these very high anyways over a center piece lagoon table. And using my current t5 over a 90 gallon. I will be tearing down a 74 gallon bowfront soon and not sure what I will be doing with it.