So, during the day the warm side of my ball pythons tank is 90-93° and the cool side is around 79-81°. But once nighttime falls the cool side temps drop really low. I have an under tank heater as well as a basking light on the warm side so even at night the temps never fall below 90°. But, on the cool side the temps go from 65-70°. I know ball pythons can have a heat drop at night, but is this too low of a drop? I try everything to keep the ambient temps up at night. I have more than half of the lid covered with a thick towel and the area uncovered has the heat lamp. Yet still, the temps drop to the high 60s at night because my house gets so cold. (I am not in control of the thermostat so making the house warmer isn't an option). How else can I get the night time temps closer to 75+? Should I move the heat lamp to the cool side at night?
Or is it not a big deal as long as he has that 90° belly heat all night?