simple solution, and i use them on both my horned frog tanks, zoomed under tank heater pad. you dont need lights for frogs, if you want a light use a florecent so it doesnt dry anything out. the undertank heater will provite humidity as well if you keep your substrate moist like coco bedding. your frog will move to the heat pad if he wants it or away if he doesnt. just dont put your water dish under the heat pad.