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Electronic Plant Monitoring
You can’t trust nature (it’s red in tooth and claw, remember?) but you can monitor its effect on plants with either 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. No batteries: it works 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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38097 PH METER |
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