Ok I just checked the substrate. I'm at 1/2" so that is good. I think you both are right about the size of the tank being so large. My bet is that the heat is dissipating too quickly. The other issue my be that the light on top is not radiating heat well through the glass. The light is a 100 watt infrared heat bulb. I wasn't too familiar with the RHPs so I did some research. They are pricey but look like they might be the solution. My concern is that there isn't enough belly heat. I know they need belly heat to aid in digestion. Will an RHP provide the type of heating needed? I also looked a heating tape. Would heating tape provide an increase in heat over the uth? Thanks for both your replies!!!!!

Oh and the thought had crossed my mind! LOL Perfect humidity and heat here in Florida! But Momma couldn't take it!