Acu-Rite is a thermometer that is awesome to have. Measures 2 areas and humidity. Can get them at Wal-Mart for $12.
Leave the UTH on all the time
U will need a thermostat, I have a rtheostat and it didn't work that great and so I added a dimmer to that, but the UTH is just so inconsistant so you I ordered the Repti-Temp 500R for my thermostat. Keeps the UTH or lamp on or off to keep the temps where u want them.
As for humidity you need a water bowl pretty good size and if your running a lamp you need a big ass one and maybe some misting might be needed.
For more infor on what you need.......
http://www.ball-pythons.net/modules/...warticle&id=59
I've had the same issues, here are my threads hope they help:
http://www.ball-pythons.net/forums/s...d.php?t=107583
http://www.ball-pythons.net/forums/s...d.php?t=107410