Was watching my temps yesterday and none of my fans turned on (set to go on at 80 for the fan on the tank, and another set for 81 in the sump). Today maybe another story, but I have my chiller waiting if I need to hook it up.
My air may go on at when I cruise home for lunch but my tank has been solid 77.5 to 78 even the last couple days. No chiller or fans. Open top though and the back of my stand is open as well.
If I let the tank creep to 81 it likes staying there for 2-3 days and goes back down on its own without ac or fans. But I'd rather keep it between 78-79. Plus can't come home to a muggy house.
it will take a while for it to move them temp. but it will also take a while to drop the temp. she should load up on 2 liter bottles filled with rodi water freeze those suckers up since she is at home