I have a 4 bulb AL on my frag tank....

I quickly replaced the bulbs for 2 ATi blue, 1 coral plus, 1 aqua blue special.... Althought it looked good I am after growth so a little more white lighting is what I want... I took out the coral plus, which I didn't really care for, and put in the GE 65k bulb and took out the aqua blue(which was a nice looking light) and put in a 453 actinic that came with my fixture....