Hi..
I would recomend you to use the Exo-Terra 2.0 UVB bulb instead (The big one).
It gives more bright light instead of the 5.0
Or better yet, combine a 2.0 and a 5.0. I use this setup, and it works and looks perfect. Very good light and enough UV.
2.0 also has a more pleasant glow than 5.0.
Try it, you will not regret you did.
Regards
Daniel