Is it common to have the run off be drastically lower than before you water/feed? I'm a first time grower. Using Fox farm Ocean Forest soil and Fox farm nutrients. Growing Tangerine autoflower. I noticed a few weeks ago some sign of ph fluctuations in the leaves so I started monitoring a bit better. Last week I watered with ph 7.2 and the runoff was 6.1, yesterday I watered 7.4 and runoff was 5.9. What causes this huge difference? I thought maybe it was my ph meter so I splurged and bought a fancier one but still having the same issue. Any help would be so greatly appreciated.
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Microbes in the soil will adjust the pH. It's normal for your pH to be low in FFOF soil but as long as you're watering in at about 6.5-6.8 you should see the runoff measurement increase over time.