Hmm..lots of variables here. My lps
did best under very low light, like that of a 150 watt halide (50 PAR where they sat). They were the most colorful then. Now these LEDs have forced me to do super long acclimation, since I can't turn the display tank down to accommodate. So i end up putting my new additions in the back tanks and starting them at maybe 50% blue and 0% white, and going up from there weekly.
BTW, 50% blue and zero white is enough to keep sps
alive with the units I am using. Not brilliantly colored, but growing.