Do not put in a large tank. I got this to replace my old sensor that was basically ruined by my UV lamp and heat bulbs. But I found its range to be tiny! It just seems to read the temperature of the wall it's attached to. I was hoping it would show the temperature of the warm side of my 120g beard tank. When I checked the heat with my thermometer, the wall it's attached to reads 84ยฐF and the gauge reads 84ยฐF (at least it's very accurate), but next to that I get readings of 94ยฐF and 112ยฐF ...
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