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pH

DTaro
DTarostarted grow question 5y ago
DWC grow. 1. pH dropping 6 to 5.3 in a day, changed new nutes still happening 700ppm/ec 1.4 staying same no change. 2. Roots doesn't stink or smell, my roots has always look like that using biodiesel and seaweed 3. Distinct brown spot on leaves Please advise.
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Leaves. Color - Dark-brown
Roots. Color - Brown
Feeding. Other
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MaxGrowCanada
MaxGrowCanadaanswered grow question 5y ago
If your tds remains stable and have a downward trending ph, it sounds to me like you have a strong reaction between your nutrients looking for equilibrium at a lower ph. The byproducts of these reactions are most likely insoluble and therefore the plants start to show deficiencies. I would suggest trying to eliminate one nute at a time untill the problem goes away. Also, oxygenating the water speeds up these reactions, sometimes.
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Grey_Wolf
Grey_Wolfanswered grow question 5y ago
@DTaro Hi mate I think it could be taking up the water only and leaving the nutrients & salts behind in a higher concentration thus lowering the PH so quickly just my thoughts 👍
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blendmedmedman
blendmedmedmananswered grow question 5y ago
yeah with dwc you just have to watch it, this happened to me, i did the same and just kept changing the water out every other day, grow came out great its just a little work. as far as the brown spots that didnt happen, just keep changing bucket out and keep an eye on the spots
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