This is my set up .. heat lamp on top right, with heating pad underneath .. both hooked up to a thermostat. Then for good measure, 2 temperature strips on both cold and hot sides of the tank (I measure temp with an infrared temp gun. Also a humidity gauge on the mid/left side. Top 3/4 of the cage lid (from the left), is covered in foil/duct tape to help retain heat. 2 hides on either side.