Hydrofarm Meter 3 Way$8.99
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), and PH readings between PH 0 (acidic) and PH 10 (basic) are represented. The durable, easy-to-read tester is suitable for indoors or out and needs no batteries to operate.
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