I'm having a terrible time getting Gio's setup just right. I've got an undertank heater and a red heat lamp and the warm side is still pretty firmly at 88 degrees. Humidity goes up into the 70's for a little while after I spray the tank down, but then drops back to the low 50's the rest of the time. I've got a big bowl of water and also a homemade humidifier, and half the top of the tank covered.

Gio spends most of the day in his cool hide, slithers around in the evening, basks under his light for a bit, and retires to his warm hide till morning.

Any ideas on how to increase heat/humidity?