I have 4-20watt flouresent lights (two-marine-glo and two power-glo) and a MH all hung over the tank 4 inches. It's a 33 gal, two percula clowns, christmas wrasse, scooter blennie, mandirin goby, fire goby, one blood shrimp, 3 scarlet hermit crab, and 4 blue hermits, and a really big crab that I...