OK i have been thinking of making my fish only into a reef tank I have a 60g with 2 25 watt bulbs for now can someone tell me what kind or actually where to buy a fixture for my tank also will i need to get a chiller cause the lights are so hot I have about 47 inches long for the fixture i have a canopy on the tank to keep the cats off it thanks also I was looking at compat flourecents would 4 of them be good enough for reef lighting