Your temps do not need to drop at night - it's not required. Mine don't. If they do don't go below 75 on the cool side and still make sure there is a temp gradient of 5-10 degrees between the 2 sides. Lights will dry up the humidity. I use a UTH on warm side and I have to use a red heat light 24/7 on the cool side or those temps get too low. If you add a humid hide to the warm side (and your BP uses it) then you don't have to worry about the humidity in the rest of the cage - just keep the humid hide damp. Mine won't use one, so I have to do more work. I covered most of my screen top with duct tape leaving holes for lights (some use pegboard or saran wrap). You can then just mist daily and that may do it. I added a Tropic-Aire humidifier and never have to mist. Or you can go for a humidity loving substrate - cypress mulch.

Warm temps: 90-95 Cool temps: 80-85

Those are belly temps. I don't worry about ambient temps much since they mostly feel the belly temps. And if you don't have shelves, branches,etc where they can even reach the areas where ambient temps are lower then what does it matter?
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