Might be a silly question, but say I have a snake that is primarily terrestrial and requires a temp of 85. Using a Helix or Big Apple or whatever, would the probe sit in the substrate or would it be taped to the back of the cage to measure ambient air? And what if you want a basking spot of say 95; would you then keep the probe in the basking spot and set the thermostat for that temp? Perhaps I'm making this more complicated than it really needs to be.
Thanks though
Jon

