Need some advice

[Craiga 01453]

Sitting on top of the eco earth wasnt sure where to put it reptile store didnt tell me it had to be on the glass it self thanks for that information. Going to put probe under the substrate and its about a half inc at most for substrate.

The probe goes OUTSIDE the tank. Between the UTH itself and the glass.
If left inside it will be moved, peed on, etc...and cause inaccurate readings, which could result in dangerous heat spikes.

....and when measuring temps with your temp gun it's important to measure the glass, not the substrate. Snakes burrow and WILL move substrate around and lay directly on the glass.