I use a 20k MH bulb, fairly blue. When I ran LED, I ran them at 100% all colors.
In the past though, reefers used anywhere from 6.5k -10k bulbs, supp'ed with actinic for color, and results were always good. I think the real issue is hwat habbyists like to look at. The corals don't care as much. To some degree, color can be affected, but again, to the hobbyist's preferences
__________________
Brad
|