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Are moisture sensors any good? I always read about how useless they are, but maybe that’s just a certain type? What would you recommend?



Moisture sensors that measure conductivity are pretty useless unless frequently recalibrated but time domain reflectometry sensors are much better and more accurate.

I use the VH400 from Vegetronix: https://www.vegetronix.com/Products/VH400/


Yes, conductivity is pretty useless over time.




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