I don't drop the temps in my cage at night. My house naturally drops in temp at night even with the A/C on right now. The warm side is always 90-95 and the coolside during the day is 85 and at night the cool side is 78. It's just a natural, gradual drop that happens through the day-- not all at once. I see Alexa out at night on her cool side thermoregulating all of the time.