I got a moisture meter too recently was was wondering the same thing. The back of the package has recommended water levels for like hundreds of different plants and of course cannabis is not one :P It ranges from 1 to 10, 1 being dry and 10 being wet. Was wondering what reading i should shoot for when watering. The one i got is similar to this one, i know its a cheapie but i figured it would dojust for checking moisture.

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L3G10N Reviewed by L3G10N on . Soil Moisture Meter I just bought a Rapidtest Soil Moisture Meter that has a range from 1-4 with 4 being the wettest, and 1 the driest. What range would be good for my special plants? On the back it suggests 2-3 for vegetables, and even up to a 4 for tomatos......???????:rasta: Rating: 5