I do not have a thermostat.

The markings were not there when I bought him.

I use a 'heat gun' to check the temps. One of those that you point at the substrate, and it checks the temp.

The substrate was what the reptile supply company at the expo recommended. I believe it is coconut husks, colored like red/brown. It came in a 'brick'. I'll go grab a picture of the setup, and of the other 'hide' that I removed.

Thanks!