i just need some advice in what kind of lighting i will be looking at for a 55g tank. i want to be able to keep most any corals and i really want to be able to keep clams. what kind of bulbs for a pc will i be looking at. i'm for sure getting a pc, so you halide guys don't talk me into it. :lol: . anyways i need to know how many 96w bulbs i need. do i only need 2. i'm so confused.