Okay, so I have a big enclosure (about 4' by 3' and 6' high). The warmer side has a heating pad underneath and a heating bulb (about two and a half feet up so he can't accidentally touch it) and it's still only about 81 to 85 degrees inside the hide. The cooler side hide is only about 71 degrees. He switches back and forth pretty regularly. Should I get a heat source for the cooler side? Is there a way to do better than a heating pad and a bulb for the warm side? I've seen different temperature ratings on different care sheets and I'm a little confused. Thanks!