How thick is the eco-earth?
Your lamp dimmer isn't working well. The bottom of your tank is way too hot. No part of the cage should ever get above 95 degrees. What if your BP digs down into the substrate and lays directly on the glass?
Here are some good thermostats:
Budget: http://www.amazon.com/Hydrofarm-MTPR.../dp/B000NZZG3S
Mid-Range: http://www.reptilebasics.com/ranco-etc-111000-pre-wired
Best: http://spyderrobotics.com/home/products.html (for a single cage I would recommend the Herpstat intro + or the Herpstat 1)