I currently have a 55 semi-reef tank with a Med. Yellow Tang, Maroon Clown, Jawfish, Long Spine Urchin, Cleaner Shrimp, crabs and snails. I currently have 2 40 watt lights hanging about 2 inches from the top of the tank(I plan On one more 40 what. Should I git Another Actinic or another 50/50? I...