Moisture meter is inaccurate and requires constant calibration that doesn't last long enough to get a reading. Buffer solution 7.0 shows at least 0.3, often 0.5 to 0.8. I would rule out the .1 variants, but that's overkill. I had problems with nutrient uptake, persistent yellowing and leaf necrosis. I used the best PH meter which improved my plants a lot. Don't skimp on people.
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