Active air mgmlp1 3-way meter test moisture, light, and ph levels gardeners can conveniently test their moisture, light, and ph levels with the handy active air 3-way meter. Moisture readings register on a scale of 0 dry to 10 moist; light readings range from 0 low light to 2000 very strong light; accurate ph readings range between ph 3.5 and 8. The durable, easy-to-read tester is suitable for indoors or out and needs no batteries to operate. Remove from soil and clean prongs after each use to ensure the moisture meter stays in top performance shape.
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