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About 4 days ago some leaves from the top began to...
saul_greenstarted grow question 7 years ago
About 4 days ago some leaves from the top began to show yellowish veins and some brown dots of the leaf, with some having curved (Photos of day 56).
Has anyone had plants with the same symptoms to help me?
Ps: Overheating does not seem to be the problem.
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Stickanswered grow question 7 years ago
Hey bro, what an apex!! This looks like a magnesium deficiency. You could try to give her some more cal/mag for her last meals before flushing. I’ll be around, good luck with this monster!
Athosanswered grow question 7 years ago
Yellow veins are a symptom of sulfur deficiency, but that's fairly rare deficiency to have.
I agree with Jeff that Mag deficiency would appear on the lower leaves and it would be interveinal yellowing (chlorosis), not yellow veins.
I think you may have a pH issue, since you don't mention any kind of pH in your postings, before trying to add anything, measure the pH of your watering and run off. Also measure the run off's EC/PPM.
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Jeff123fishanswered grow question 7 years ago
Looks more like you had a p-k issue at some point. If it were a mag deficiency you would see it more in the leaves farthest from the top
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