Cal/Mag Deficit

OrionGrowgulstarted grow question 1mo ago

Unfortunately, I made a mistake with the Calmag dose and only gave 0.5 ml/L beforehand. Then I used the Calmag calculator and realised that I need to give 3.11 ml/L in early flowering. I did that today. Will the plant catch up? Do I have to give it every time I water now?

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Selkotanswered grow question 1mo ago

hey 👋 Don’t worry, it was caught in time, ur plant will recover. The affected leaves won’t become healthy again, but as long as the new growth is, you’re on the right track. One last thing: 3 ml of Cal-Mag seems like a lot to me. If I were you, I’d start with 2 ml as a corrective dose, then go down to 1.5 ml once it’s resolved. PS: Add Cal-Mag every time you water with nutrients (in soil: every other watering; in coco: at every watering).

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techherbieanswered grow question 1mo ago

Well, magnesium deficiency is still showing up, but it takes a little while to bounce back. I am seeing some yellowing from the bottom as well, perhaps nitrogen deficiency.

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AestheticGenetixanswered grow question 1mo ago

It should bounce back. I'm not sure what nutrients you're using so I can't give specific details. In my experience with bottles nutrients, you'll want to feed every 3rd watering.

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Captain_7answered grow question 1mo ago

If I have the correct nutrient % of biobizz cal mag (4.2% ca; 1.7%mg) you are right with the 3.11ml/L to give you 130ppm of calcium. This (130ppm) is the amount of calcium needed in hydroponic grows (dwc / coco) in the flower stage. You could go lower down to 1.9ml/L if you want to once the deficiency is corrected. This would give 80ppm Ca and 32ppm Mg. (You only need 15ppm of Mg). I would water with cal mag every watering if you’re in coco. Calcium is immobile, meaning the plant can’t move the calcium around (it can move N, P and K) so you will still see damaged leaves but new growth should start to look fine. Good luck!

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All_our_small_plantsanswered grow question 1mo ago

Hi eventuell hilft es dir es besser zu erkennen. Auf dem ersten Bild könnte es eventuell ein Anzeichen sein aber auf dem zweiten Bild sehe ich es nicht eindeutig da es keine typischen CalMag sintome sind. Typische Symptome eines Calciummangels jüngere Blätter wachsen nicht gerade, sondern biegen sich (nach unten oder oben) ältere Blätter bekommen braune oder gelbe Flecken auf den Blattspitzen und sterben langsam ab Typische Symptome eines Magnesiummangels jüngere Blätter zeigen anfangs keine Auffälligkeiten, weil das verbliebene Magnesium in sie gepumpt wird ältere Blätter werden blass und gelblich (die Blattadern bleiben grün), manchmal mit braunen Flecken, und fallen ab Achtung: Ein Magnesiummangel zeigt sich oft erst sehr spät. Meist wird erst ein Calciummangel festgestellt

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