What is Reddit's opinion of PH Meter with Automatic Calibration | 7Pros Digital Water Tester, Built-in ATC, 6 pH Calibration Packets, Great Tool to Test PH of Hydroponics, Kombucha, Wine, Drinking Water (Blue)?

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What is your alkalinity showing? Also, aside from what's wrong with the system, I'd recommend picking up one of these little jewels. I have one and love it. This is not the same one I have, but if I were to buy one again I'd get this one... I checked reviews on fakespot and it was A rated. https://www.amazon.com/dp/B07NYZBYD3/ref=cm_sw_r_cp_apa_i_sRrfFbDXWPDNJ

I looked it up. It seems to not give an exact reading, just a range by changing color. If you get a PH meter it will give you exactly what your PH is and not a range. From what I’ve gathered coco really needs that precision since the plants are more susceptible to lockout. So the phosphorus could be there but if the ph is little too high or a little too low, even a little, for phosphorus uptake it could cause a lockout. I have this one and it seems to work well. Even though I grow in soil and people say that it acts as buffer I would prefer not to risk it since my tap water comes out at an 8.3.