How do I maintain the temperature in my BP's enclosure?

[Praireboyfarmer]

I bought a 30 gallon tall terrarium for my Ball python. I got it because it was really cheap (on sale) and I figured once he outgrew it's ground space (about that of a 10 -15 gallon tank) that it could be used for a different kind of creature. Really nice enclosure.

This was a mistake. With a heating pad and a 75 watt heating lamp I CANNOT get that cage above 86 at most. The humidity is sitting fine at 53 but the temperature is not. On the small area with the heating pad it is probably 90 or above on the ground.

What is the best way to fix this? I know lights aren't good for ball pythons, but at this point I'm trying anything. I'm thinking about moving him into my dinning room where it sits at 86 degrees, then I only have to get the temperature up a few degrees V.S. over 20 degrees in my bedroom.

On another note the ball python is settling in pretty well. All aggression has subsided (there wasn't much to begin with) and he doesn't seem as nervous, seeing he tries to crawl up my arm everytime I have to reach into his cage (which rest assured I don't do very often)