You should be fine I lost power this winter temps in the room droped to 59ish snake temps got a little cold at 72 was the recorded lowest and everyone was fine they stayed curled up in there hot hides with an issue. The only reason I know power went out was all the clocks had to be reset and when I checked everyone I scrolled threw high and low temps. So I dont know how long they were at 72 but it could not have been for more than and hour give of take