On my second grow, and so far everything is looking good. Not wanting to make any mistakes, I have a small question about watering.
My PH is at 6.2 to 6.3 in the jug. However, testing the runoff it's 5.5 to 5.7. Do I want to increase the PH in the jug (before watering), so the runoff PH is Higher (6.2-6.4)?
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Runoff ppm is coming mostly from the collection of salts at the bottom of your pot. The best way to check soil ppm is to do a slurry test. Simply take one part soil from the edge of the pot about 1-2" down and mix it with one part ph neutral water like distilled water and wait about 5 minutes, then test ppm and pH for a more accurate reading.
Yes, that's exactly what you want to do.