So, I recently had to open my terrarium for awhile and the warmth escaped. Now, I have a problem, it usually got up to 80, but now it only get to, like, 70, 71 degrees? Then at night, it gets below 65! I need help if this is going to continue to hold Jimmy (my baby ceph), my P. primuliflora, I guess my U. dichotoma, and I guess my D. capensis. How might I warm it up besides using a heating pad or a very hot cup of water that will fog everything up.