Also, if I get another fixture, should I go for a 4x39w T5 HO (I have a wavepoint 36" T5 4 bulb I can use) or a 6x39w T5 HO (Nova Extreme Pro T5) set up? What will keep my corals "happy"?
My tank is 33 long x 18" tall x 17" deep (front to back). ~47 gal + HOB fuge full of Chato, Remora...