, a 50/50 bulb works great in a non planted tank... gives the tank a nice blue hue and shows off the colors of the fish very well. I used to run a 10,000k and actinic, which is essentially the same thing.
"What, exactly, is the internet? Basically it is a global network exchanging digitized data in such a way that any computer, anywhere, that is equipped with a device called a 'modem', can make a noise like a duck choking on a kazoo." - Dave Barry