I have decided to get a ball python after I sold my eight year old male a couple of years ago (wished I hadn't done that). I am planning on getting a baby, and am probably just going to start it out in a 10 or 20 gal aquarium to start with.

I'm not sure how to go about placing the probe for a thermostat in regards to the uth. I am thinking about just converting an aquarium instead of spending the extra money for a critter cage -- and this leads to my dilemma. Do the probes need to be mounted inside the tank, or can they be placed outside directly on the uth? I am asking this, because there are no notches for wirinig on a standard aquarium.

How does everyone else do their wiring if they are using an aquarium for housing their ball?

Thanks