You might check the Hydroponics forum. Or use the forum search function to find other threads about grow lights. I'm not sure that your reptiles would necessarily do well under lights designed to grow plants, but that's something you'll have to decide. I know a little about snakes, like how to give them injections when they're sick, but I don't know much about lizards.
Here's a link to a thread with a good discussion of grow lights. Maybe you'll find some useful information there.
"Isn't it enough to see that a garden is beautiful without having to believe that there are fairies at the bottom of it too?" - Douglas Adams