Putting light in snake cage?

[Desdemona]

So, I bought a rather large plexiglass cage off of someone who had used it for a snake. Its for my bearded dragon which means lights, they have one small florescent light fixture but I think it was put in so they could see more so than to provide any special light. Since it doesn't have a open top like a fish tank I need to attach something inside. I was wondering if by chance anyone has done this for Reptisun bulbs (the long ones) and if so, if there was a good brand in which to buy the light fixture from. I will need the "under the counter" style fixture. I could try to hook up the round lights but they don't cover as much area so the long ones are much better.

I have one of these.. it just has the single heat lamp and the "18 tube. I want more than "18 of lighting.

http://monster-cages.com/six-foot-cages.php