My new T5 light finally got delivered and I installed it about 15 minutes ago. I am still working on the digital timer entries. In the T5, I have 2 10,000K's and 2 Actinic 03's. I must say the tank is much brighter and quite a bit "bluer" than it was with the CF bulbs. The CF bulbs were 8 months old and needing to be replaced, I think. Now if I can just get the built-in digital timer squared away, I will be happy, at least for today.