Okay so quick facts for everyone: I live in Southern California so our room (the ambient heat) is generally above 73° during the day, and gets a bit cooler at night (which is why I've got the night heating lamp). When we put in the thermometer without any heating last night, when we got our little guy, it was about 77°. He lives in a 12" tall x 36" long 20gallon terrarium and he's an adolescent, probably about 13" long.
This being said what should I do for heating. You've all said great things but now, knowing the facts, what do you recommend?