I had two sets of T-5s in my tank, each set had two lights, for a total of four bulbs, I had on each set one white bulb and one bluer bulb. I took the bulbs and put 2 whites on one set and the two bluer bulbs on the other set, giving me the 454 look that I wanted. Now I just need to get more stuff in the tank that kinda glows. I will post some pics the first chance I get.