ok in my tank i have of course 2 hides, one on the hot side on on the cold side, and the last couple days everytime i go to sleep shes in the cold side, and i wake up in the morning and shes still in the cold side, and i pick up her hide and pick her up and she is freezing cold, so i move her over to the hot side and then she goes into the hot side hide. whats going on? (hotside is 90, cold is 80)