Originally Posted by mr_X
3 of those AI units will work over a 6' tank. They have optics also, and are very powerful. And "full spectrum" is not necessarily the best term used to describe the multicolored Cheapo units. I would simply call them "multicolored". Another option used for aesthetics and not essential for coral growth.
Why would they be called "multicoloured" if the NM spectrum you order is the one they give you. And it's not essential for corals but is for other inhabitants like your copepods? Very beneficial to your water column, Photosynthesis? You don't need FS lights,,, but why not if your trying to mimic what is natural?
He's got 285 watts which I think is on the limit for a 6' tank, 24" deep. Dark spots even with optical lenses, he will have to raise them more than 8" to have it lit up?