heating question

[The Serpent Merchant]

Where would you put the probe in these cases? somewhere in the middle of the tank?

If you are running two thermostats with a heat lamp and a UTH the probe for the UTH should be attached directly to the UTH on the outside of the tank (the best place is sandwiched between the bottom of the tank and the UTH) The probe for the heat lamp should be inside the tank directly under the heat lamp