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Potassium burn?
2x2growingstarted grow question 3 years ago
Does this look like potassium burn to you guys? Brown tips along the perimeter of leaves with brown spots. Been going light on the K lately so maybe I’m starting to show deficiencies.
Week 6 of flower. Runoff ph 5.9 (soilless). Ppm 1500+ (Tds meter broke recently.
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Leaves. Tips - Burnt
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CRiSPrGrowanswered grow question 3 years ago
hey there Drimsnbuds, That's absolutely N toxicity actually. You can tell from the "too green" and shiny aspect of the leafs. The browning is just the burn from over feeding. hope this helps ! 🚀
DoctorGreenThumbanswered grow question 3 years ago
1500 is high for week 6. I would feed water next feeding and do and test the runoff again. gl
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Festerusanswered grow question 3 years ago
As well as the very purple stem on some fan leaves, very indicative of a calmag deficiency.
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Festerusanswered grow question 3 years ago
I’m not an expert, it could be excess phosphorus, which causes tip and margin burn as well as causing cal mag deficiency. which I see magnesium by the “random” spots on the leaf and the yellowing from the margins in towards a green vein.
I hope this helps in some way! Happy growing!
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