I would go with 3 whites and 1 blue...Currently I have 2 blues and 2 whites, and although the tank looks awesome so far as color is concerned, the intensity is just not there. I have softies, lps, and some types of sps, no clams, and an anemone BTA. Although everything is doing great, it could be doing better under another white 50/50's. So I am actually going to take out a blue bulb here soon and replace it with a white.