nick,the t5s and t12s seem to be working great...all my sps seem to be holding there color great...some of my purple corals seem to be turning more purple than they were,its wild because the actuall coral seems to be changing color,not just the light making it look that way..i am gonna up the 28 watts to 54s to hit them with some more light....ive always wanted to try it to see if it would work but been kinda scared but its been almost a month and everything is holding up great....