Are you not using a UTH/thermostat at all? Or you are, but suplimenting with lighting? The belly heat from UTHs are a must for proper digestion - as you will notice in some regurge posts on that other forum.
You really don't need lights with heat at all, in my opinion. It will get too warm for your corn. They aren't like ball pythons; they are from North America and tropical temperatures are too high for themI find that mine prefers an ambient air temperature around 73F (but some may differ of course).