On my new 220 I am currently running 4x96W pc's(came with tank) and 4x39W T5ho(which i had before). Since the T5's are 36" I could add another 36" T5 with 4-6 39W for 200-300. The other option would be to replace the 36" fixture with at new 72"(600-900). My question is would it be worth a...