Ok, I'll wrap up my replies to this OP with this:
PROPER research would have taught you the difference between thermometers, thermostats, temp guns, etc...
PROPER research would have taught you that the guy you got the snakes from has no clue about snakes.
OP, I have no issue with you personally and would be happy to help moving forward. But this is a LIVING being, and taking ownership of it requires more than a few hours of research.
I honestly, whole heartedly wish you and your snake the best.