I finally got around to putting the Refectix under the two tanks. I checked the temps with an infrared thermometer and a wired probe.

Temps of probe on glass (inside tank)___________94.6_______99.9
Temps of probe on substrate (inside hide)_______78.6________81.9
Infrared range on top of newspaper & aspen___85.2-88.6___83.5-88.0

The infrared thermometer will not take a correct reading of the glass. One tank has one sheet of newspaper under the aspen and the other has two sheets.

One tank has a ZooMed UTH which emits heat. The other tank has an Ultratherm UTH which says it emits infrared heat (doesn't emit heat but heats objects).

The last thing I'll try is removing the newspaper and just using a thin layer of aspen. I'll set the temps so the probe on the glass reads 93-95. That's the best I can do.

Thanks for playing along.

JohnNJ

PS - the snakes are thriving. Eating f/t mice every 5 days, pooping weekly and very neat one piece sheds.