So I have a 20 gallon long tank with a screen top cover. I use a 6x8 under tank heater on one side. I use a 75 watt heat light during the day and a 60 watt blue light at night.

The problem is that my house temp is constantly kept at 68-72. The 75 watt light heats the tank to 82 F during the day, but it always dries out the substrate. I find myself misting at least twice a day. I use eco-earth.

Does anyone have a suggestion on how I can raise the ambient air temp while keeping humidity levels up?