I get my new RTB on Saturday, and have been running the enclosure for a couple of weeks now to determine if my temps are ok and allowing them to stabilize. I have a PVC enclosure (48"w x 24"d x 12" h) with (4) 24" lengths of 11" Flexwatt side by side. The 3 pcs on the left are set to 80 degrees and the (1) piece on the right is set to 90 degrees (The probes are on the bottom of the enclosure, inside the enclosure*). The air temperature within the enclosure is roughly 77 degrees. Is this ok, or do I need to raise the air temps more?

*I attached a length of tubing with epoxy to the inside floor of the enclosure, the probe fits into the tubing. This way it can't get moved by the snake, but I can still remove it when I need to clean the enclosure.

My setup: