I agree with pitontheprowl, who is an experienced herper. I trust the people who are tried and true and know what they are doing.
What at I have done since the bubble drove me crazy was to use styrofoam. I made a channel in it so the probe sits flush with the top, a channel for the cord as well. The uth is stuck to the glass and the tank sits on top of the styrofoam. The probe sits directly in the middle of the uth on the outside of the glass. Ttaylorr was a big help with this and has a diagram as well. My uth no longer has that damn bubble and it reads 90 no matter where I use my heat gun. Even temp.
oh, and nothing sticky ever goes inside the tank...ever! Kinda my pet peeve. Lol
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