i have theremomters that are alwasy in teh tank and i have one i probe it with everyday to make sure its right...liek the probe one doesnt say in teh cage...i put it in palce and leave it fof baout 10 misn or so......but after reading this i think everythign is ok...like the susbtrate is the right temp and stuff..it was just the "ambient temp" i was worried about...thanks alot