Don't over thnk,that's the first thing the second thing is trial and error,expirementing with stuff...no one is in your situation,so they can only give you tips on what you can try,but doesn't mean will work,you have to mess around with diff bulbs,heat bulbs or basking bulbs,placement of the water bowl..replace card board on top with wet rags..get like 3-4 rags and wet them heavily but not to where water is dripping but very wett and cover 75-80% of the tanks screen with it. That what I do and I mist maybe one time a day just for the hell of it..but the wett rags help keep humidity between 40-60 for 2-3 days before I have to re soak the rags. Good luck