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zedoninha started grow question 3 years ago
Need help!

Yesterday i discovered that the pH is all wrong. (i was waterring with ph around 7) and i flush them with 50 L of pH water until it lowered to 6.5 ( the drained water) . Today i empty remaining water in the trays and i pH was around 8!

whats wrong? any tips?
Resolved
Week 8
Techniques. Defoliation
DILLIGAF answered grow question 3 years ago
Hi there mate the ph rise you are seeing is the result of your plants simply taking up water and/or nutients
from the soil. if you are worried about to high a ph level you can add a little bit of liquid sulphur to your feed
I use dolomite lime and mix it thru my soil pre grow which can help stabilize the ph a bit.
Wicked_Stix answered grow question 3 years ago
I don't do much soil, but I would try adding 2 tablespoons of 3% hydrogen peroxide to a gallon of water and that will kill any fungus or bacteria that may be invading your soil. That's how I deal with bad bacteria in hydro. Hope that helps. Good luck with the rest of your grow