I'm a little confused. I love my AP T8's and was looking at a rack system. Do you have to use hides in a rack system, since the tote itself is kind of like one big hide? Since the belly heat is normally in the back and that's where I see people put there hides, doesn't that technically mean the hide is on the hot side? Is it really possible to regulate a 90-92 hot side and 80-82 degree cool side in a bin, or do you just aim for more of an ambient temp of like 82?