Quote Originally Posted by BPgirls View Post
Ans just to be clear I am talking about the Thermometer probe not the thermostat probe.
Ah that clarification would have been handy earlier :p

Thermometer is fine in the cage then. Only thermostat probes for UTH need to be outside.

Here is a chart to help clarify more.



Just keep in mind you will want to measure your hot spot UNDER the substrate, ideally with a temp gun. Wired probed thermometers can work too but I find they are not as accurate for surface temps.