Hi, I am sorry if i posted this twice. I am new to the sight and could not find the first one I posted. I have a standard 55 and have recently bought 2x250 MH lights. This tank has been running for about two years on 2x96w 50/50 smartlight pc's. I would like to use 20k bulbs (I like the color). Should I use both of the pc's for the atintics? If so what wattage :? should be used? I know the 20k will not promote coral groth as well as the 10k, will this hurt my ability to maintain a healthy tank? Also should I intrduce the new lighting gardually or go full blast from the start? I would like to be able to keep anything I see and think is cool. Thanks for any info you might give.