I realized I didn't answer your question. You'll need a heat lamp depending on your temperatures. For glass tanks I usually recommend a dome with a ceramic heat emitter bulb (CHE) which only provides heat. Having a dome on a dimmer will help you adjust the temperature of your ambient temperature as well as your hot spot.
This is what I used when I had a glass tank:http://www.petmountain.com/product/r...lamp-lamp.html