I have the repti 10.0 for my Bearded Dragon who is currently in a 10 gal (don't worry he's a baby and moves along just fine, lol), and I bought the larger fixture and bulb so when it's time for a bigger tank I won't have to buy a bigger light as well. But here's my question, is the 10 too much for my chameleon? She's still young. And do you know a place online I can purchase the a uvb bulb, not the long, just a regular bulb? It'll probably be better for her that way instead of the long one across the top of her house. Replies appreciated.