Hey so people might say its incorrect on what I do but I actually give my frogs about 6 hours at the most of uvb every other day. So I feed and give uvb then turn off and wait till the day after. The light is about ten inches away from my frogs and is a 2.0 tropical uvb bulb. and ive been doing this for over 2 years with my frogs and their really healthy. But if ur frog is a albino do not use uvb at all.