Also what type of tape should I use to tape down the thermostat probe onto the under-tank-heater?
Foil Tape for any and all heat-related taping. You can get it off amazon http://www.amazon.com/3M-Foil-Tape-3...ords=foil+tape
And where should i put my thermometer probe/how should i hold it down?
Between the bottom of the tub/glass and the UTH. I just followed this tub setup guide http://ball-pythons.net/forums/showt...e-Basics-*DUW*