Chris, I have only two SPS corals that would handle being 4" from the surface under my lights (a tabling Acro and a Candlelight Acro). They are halides, but the fixture is Chinese and the bulbs are from Home Depot (came with fixture). It is a 36" fixture over a 48" tank too. It has two T5s (UVL Super Actinic and KZ fiji Purple right now). Needless to say, this setup isn't high output by any means. I have Stags and Milles on the sand in my 24" deep tank that have better color there than higher up. All my LPS corals are off to the side away from the halides. My water is crystal clear though, so that makes a huge difference.
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~ Mindy
SPS fanatic.
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