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Inside_growlab
Inside_growlabstarted grow question 8d ago
Hi guys, my plant has been showing some problems for about a week now, and the young leaves are getting lighter and lighter. Can anyone help me figure out how to fix this?
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Leaves. Tips - Burnt
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purecannabliss
purecannablissanswered grow question 2d ago
The yellowing between veins while the veins themselves remain greener suggest this is most consistent with a magnesium deficiency, though it could also be aggravated by pH drift or nutrient lockout. Possible causes: 1. pH above 6.2 in hydro can lock out Mg 2. If you're using RO water without adding CalMag
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Ultraviolet
Ultravioletanswered grow question 8d ago
Ph skewed, flush, reset and lay off the calcium.
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John_Kramer
John_Krameranswered grow question 8d ago
Ca excess and due to this lockouts stop using CalMag or flush and lower it's dosage
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Enochian
Enochiananswered grow question 8d ago
Hi there. For future grows I suggest adding a little Dolomite Lime to your substrate, or use Cal Mag in your feed as already advised.
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Selkot
Selkotanswered grow question 8d ago
This is typical of magnesium (Mg) deficiency, sometimes associated with an absorption problem due to pH or excess calcium/potassium blocking magnesium. to fix it : - Check the pH of your watering (Soil: 6.2–6.5; Coconut/hydro: 5.8–6.2) - Add magnesium by adding a Cal-Mag supplement. - Avoid excess: too many nutrients (especially K and Ca) can block Mg. - Monitor progress: leaves that are already affected will not turn green again, but new shoots should emerge healthy within a week. good luck!😊
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