Okay so I have a 75g tank (48"). I have 2 x 250w MH HQI 14k and 2 x 54w T5 actinics. Light is about 12-13" above water.
I have zoos, rics, leathers, a clam, shrooms, hammer, couple hard corals, some more softies, few SPS corals, anemones, polyps, etc...
I do have a UV glass on top of the bulbs...