Those temps are really worrying.

How are you measuring them and can you tell us the temps in the hide over his pad at night and during the day?

You should really be shooting for a warm side of 90-93f 24/7 and a cool side of 80-82f also 24/7.
I only use the thermometer which you see above her hide. It has a range so that you can get a good idea of what the temp is on both sides of the enclosure. Again, this is just what the pet store manager suggested. He's supposed to be really good with reptiles, but I'm starting to question his "expertise" now that you're all saying that I'm doing it wrong. LoL. But I'm just glad that I'm able to fix things now that I know how. I did do research in the beginning for stable BP enclosure temps, and I remember reading a source that recommended the temps that I've been keeping track of. It said that a night temp of around 70 degrees F was best, so I just listened to it. Now I wish I'd read further. Thank you for your temps! I would have never known to change that. How can I keep her tank that warm at night without using a light source? I don't want to interrupt her day/night cycles by using a lamp at night. What do you use? I've read that heating rocks aren't safe with BPs since they burn too easily.