Heat question?

[CptJack]

You need to measure the glass under the substrate because they can and will excavate down to that and too hot and you've got a hurt snake. Too cool above and, well, they'll get down to where they need to be.

[Yzmasmom]

I have another carpet to switch out when this gets dirty.

So, if I get the part right on top of the carpet to 90, then the top of the bedding temp doesn't matter?