As for heat, you can either heat the room, or use an RHP. The RHP will dry out any plants close to it, however. I use an RHP, and just keep the plants away. The heater is suspended from the ceiling on the shaded side of the viv. My corn likes to perch up on a ledge under it for concentrated heat. I only keep one side of the viv under bright LED light, and of course, only for 12 hours a day.

I ordered an extra UTH and an extra t-stat removable probe for adapting the UTH to be compatible with a bio-active substrate. The materials haven't arrived yet, but the plan is to silicone the UTH and probe to the top side of an insulating styrafoam base. I have a slate tile I'll place over that. With everything sealed in by silicone, it *should* be safe from the usual accidents, and radiate enough heat through the slate to warm the animal. Fingers crossed for "the best laid plans..." on this one.