I would think that the ambient temp vs the substrate temp would differ depending on the type of caging you are using and it's ability to keep heat/humidity in. We use 6 to 7 inch deep Sterlites so don't see all that big a difference in air temp vs temps directly on the substrate or inside the hides.

We measure our temps in two places....the ambient air temp on the cool side and the temp inside the warm side hide (probe is tucked just under and inside their warm side hides).


~~Jo~~