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Calcium deficiency?

GreenCosmos
GreenCosmosstarted grow question 2y ago
Saw this little brown/yellow parts today. She is in BioBizz LightMix Soil and gets 0.3ml/L BioBizz CalMag 3x per week. pH is above 6.5 . Today I gave her 1ml/L CalMag. Was this the right choice? Is this a calcium deficiency?
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Leaves. Color - Dark-brown
Feeding. Deficiences
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Roberts
Robertsanswered grow question 2y ago
This is calcium deficiency and likely due to ph getting too high. Likely need to increase feed amounts
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Stork
Storkanswered grow question 2y ago
I'm not sure if it's calcium because it forms from the edges and makes lines, which seems more like PHFluctuations
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