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Grow QuestionsPotassium deficiency?

Potassium deficiency?

Rollex420started grow question 4 years ago

Is this a potassium deficiency? Before it happened my water was on 930ppm on the 4th week of flowering. now the 5th week has started and to correct this problem I have added 1 ml of pk 13-14 to the diet. So ppm is now 1100. Do you have any advice? thanks a lot to everyone!

Rollex420

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Leaves. Other

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CRiSPrGrowanswered grow question 4 years ago

Hey there Rollex, the rusty spots are calcium deficiency and the discoloration on the side of the leafs is magnesium deficiency, try adding more cal mag it should stop spreading quickly and the plant will recover. Hope this helps ! 🚀

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