thermostat placement

this might seem like a dumb question, but i always see people say different things... does the thermostat probe go underneath the heat mat? or inbetween the heat may and the cage? does it even make a difference? I always thought that it was in between the heat mat and the cage.


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Ideally it would be sandwiched between the heat mat and the underside of the enclosure... but if the heat mat was pre-installed, or the thermostat probe is very thick, or for a variety of other reasons, you can put it under the heat mat. Just ensure that the whole enclosure is supported well so that the thermostat probe doesn't create a pressure point that can crack the enclosure floor, and I would minimize airflow around the probe so it accurately reads the heat mat temperature, and not the ambient temperature of the air under the enclosure.