Well i almost had a heart attack, i woke up yesterday for school and everymorning i check the temp in the tank thats got my corn snake in it and i saw the end of the thermometer lit up, well my brain dosnt work in the morning so i threw my heat up to like 90, put more lamps on thinking the temp is like 10 degrees, untill i was fully awake a realize the thermometer only starts at 80° =)