
You can’t trust nature (it’s red in tooth and claw, remember?) but you can monitor its effect on plants with any of these electronic meters. The pH meter has a 7-1/2" long metal probe with a 1-5/8” x 3/4” ballistic meter on top that displays pH from 3 to 10. The 3-in-1 meter is the same size but with a switchable meter to measure pH, light or moisture. The moisture meter has a 7-1/2” long probe with a 1-1/2” x 3/4” ballistic meter, and measures 11” long OA, with a watering chart on the back of the package. No batteries: they work via chemical reaction to different metals (either that or it’s magic).
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38098 3-IN-1 METER | |
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38772 MOISTURE METER | |
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38097 PH METER |
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