richard rendos
Active Member
I just received my new AB 250 watt 10000K bulbs and installed them. I'm sure that the color will shift a little, but right now they are pretty darn yellow. I have been using Sunburst 12000K bulbs for almost 3 years now. Just switched because I have read good things about the AB bulbs and coral growth. Quite a difference between the 12000K (whitish blue) and the 10000K (yellowish white). I will update if and when they shift color. I am very interested in seeing if they make a difference in my SPS growth rates.