SO do you put the UTH on the cool side or warm side?

[Meech]

well i have thermostat so i try to keep it between 85-90 in the day but at night when i get the tank from 80-85, the cool side goes to about 70-75.. i feel like that 70 is too cold, it makes me uncomfortable.. im getting my ball on Sunday, i want to fix this soon.


i have a glass tank.