I was reading my copy of The Savannah Monitor Lizard and I got to the section where it talks about heating. I was shocked to see it said to never use a heat sorce that does not also provide light. I continued reading and could not find any explination as to why. My entire life I've used a CHE/UTH combination to provide heat for all of my reptiles, and another source for the light depending on the reps needs. I use the CHE for the basking heat, and combined with a UTH the overall heat gradiant has always been in the proper range. Heck I've used this set up on my iguanas thier whole lives and they both are 7 years old next month hehe, fit and healthy according to thier doc.

Does anyone know why they would say to never use a heat source that doesn't also provide a light?

Thanks for the help!