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PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium?
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1 review of this product found across Reddit:
1 point
·
6th Dec 2021
For ph meter, try this https://www.amazon.com/Hydroponics-Accuracy-Measurement-Household-Drinking/dp/B0915WWTTS use “ph-up” and “ph-down” (or powdered citric acid) to adjust. I try to keep my ph between 6.0-6.4.
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