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Grow QuestionsSupplement CAL MAG ?

Supplement CAL MAG ?

CaptainCreamstarted grow question 4 years ago

If I had a Cal & Mag deficit and replenish it with liquid supplements after about a week, will the plant recover? If so, after what time? or Maybe you think its something else? NOT CAL MAG ?? Help me ... ;)💩

CaptainCream

CaptainCream

CaptainCream

CaptainCream

CaptainCream

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Leaves. Color - Yellow

Leaves. Color - Dark-brown

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Athosanswered grow question 4 years ago

Calcium deficiency shows on newer leaves, not older ones so it is not that. It looks like a textbook magnesium deficiency, but there's a few thing you need to keep in mind before rushing to buy cal mag or similar. First magnesium absorption is locked out when you overfeed potassium (K) or phosphorous (P) (flowering nutes) so be sure it is not an issue of overfeeding; also magnesium deficiency exists 4 to 6 weeks before it shows like in your pictures, so it will take a while before it looks like it is getting better. Your source water needs to be around 0,5 EC (250 PPM), if it is much lower, then you will have to supplement calcium and magnesium.

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