Got my new frog yesterday and hooked up the uth. It is stuck to the side of my medium kritter keeper. But it isn't getting up to 82. The air temp in the room is about 72-73. I know a bulb will give the heat I need, but how do I use it without melting my keeper? I was thinking about those one that are designed to fit in the door on top, but they are only like 7 watts. Any ideas?