the uvb will not put out heat use a 60 wat bulb with a dome next to the uvb make sure he has somewhere to get away from the heatim getting a 10.0 uvb light today or tommorow im surprised my moms doing this then again i dont ask for anything and im doing things for the stuff but im going to convert the top of the cage to metal mesh if I cant figure a way out to heat it if im useing a 18 inch uvb will it be to hot to put on normal mesh?