Accurite placement

I'm just finishing up my 1st/new rack and was wondering where you
guys set up the Accurite probe in the bin.


Also there was two types of accurite with and without the probe,Probably silly question

(but I got a couple of each just in case), but are the probeless ones ok to use?

i would only use the ones with the probe to monitor both sides of tub put probe on hot side and the unit on the cold side. probe should be on inside bottom of tank under whatever bedding you use.