With mainly non photosynthetic corals in my tank mainly gorgs and carnation that are red, purple and blue colorored, I am running 2 - 36"- 39w bulbs on a 660 ballast. 1 Actinic White T5 - UV and 1 Super Actinic R T5 Fluorescent - UV. I tried 2 super actinic and tank was to purple colored and 2 actinic white is 2 white for my taste. Any recommendations to swap out a bulb for a different color bulb or to add another 1 or 2 bulbs to the mix. This is almost strictly for appearance as I said the corals are nps.