You want to keep both of your heat sources on one side of the tank to create the thermogradient, get the accurite thermometer pictured above, and get a thermostat. http://www.amazon.com/Hydrofarm-MTPR...7463473&sr=8-1 Spring for the 2 day shipping to get one ASAP. Also one of these http://www.amazon.com/Lutron-TT-300H...7463572&sr=1-1 You can probably find them locally. If you do the free amazon prime trail you'll have your shipment by Friday.
What size enclosure is he in?
What wattage are your bulbs currently?