Yes that is the ambient temp and I have a hide in each over a uthp. It is much better since I have tried 3 different beddings and all kept the humidity to the max at 99% and now just lined the bottoms with 2 layers of paper towels and it seems to be good. So any suggestions is welcomed! Oh forgot the dimensions of the tubs! LOL They are 26 1/8" long by 13 1/4" wide and 6 3/8" high.