Hi,at present i have 2x36w pc with 10000k bulbs.i supplement that with 2 NO actinics and the corals that are doing well under them so far are 1 plate corals,several kinds of leathers,zooanthids,green star polyps,hammer coral,bubble coral,xenia(2 kinds),shrooms.For some reason,Lemnalia(i think) and yellow polyps dont seem to be doing well.I am going to add another 2x36W pc,but dont know whether to get 10000k or 6500k bulbs.What do you guys think?