I have my baby leopard tortoise in a closed chamber. My thermostats all read that air temp is 80 degrees or higher in the enclosure. However, when I use my temp gun on the ground it reads at 71 degrees in the coldest part. Should I believe the temp gun or the thermostats? I have him in a 75-80% humidity enclosure and believe that the damp ground is the reason why it might be colder. What should I do?