Quote Originally Posted by madaeroom View Post
I was told not to use a heat lamp or ceramic heat emitter due the very issue you're dealing with. The thing heat well but ultimately dries out the air as well which is why you are having to spray so often. My son's pac has an eight watt heater on bottom and 4 watt on same side. I have found that we only need to spray once maybe twice (rarely) a day.
As Lanky mentioned, heaters under the tank are not a good idea for pacman frogs since they burrow to cool off. High temperature is necessary for the frogs to properly digest their food and if you don't provide that for him, he can have problems later on.