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Yellow spots, any help ?

Hiddendragon420
Hiddendragon420started grow question 6y ago
I've got yellow spots appeared on leaves and stem I am wondering if anyone can help identify what this is would be great thanks.
Hiddendragon420Hiddendragon420Hiddendragon420
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Leaves. White powder
Leaves. Color - Yellow
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Hiddendragon420
Hiddendragon420answered grow question 6y ago
Ok cheers bud, always on top of of the pH as hydroponics.
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SwedishChef
SwedishChefanswered grow question 6y ago
idk what the yellowing is but you need some magnesium. It could be a PH problem, 5.5-6.5 is the optimal range for cannabis.
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