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Yellow spots, any help ?

Hiddendragon420started grow question 5y 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.

Hiddendragon420

Hiddendragon420

Hiddendragon420

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Leaves. White powder

Leaves. Color - Yellow

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Hiddendragon420answered grow question 5y ago

Ok cheers bud, always on top of of the pH as hydroponics.

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SwedishChefanswered grow question 5y 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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