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5th Flowering week leaf yellowing change in nutrient program 1 day of tent overheat
GreenEyezstarted grow question 2 years ago
Last week (4th flowering week) I started with Plagron Greensensation and 6 days later I've seen some serious yellowing of the lower fan leaves. Also leaf tips are turning purple a bit. Had a day of overheating (~29°C) too. Question is, with what am I struggling with here?
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GrowingGrannieanswered grow question 2 years ago
If this were my grow, I'd be treating a nitrogen toxicity which has led to a calcium deficiency... and I would be flushing with 3x the pot volume of pH'd water... I'd also be lowering my pH to 6.2 and getting rid of the calmag because that's useless given the reason for the deficiency (too much nitrogen).
Good luck!
ClydeGrowsanswered grow question 2 years ago
Crispy at the bottom suggests root problems to me (bound)... Because your pH seems fine (so long as there's some slight variation every feed). They're in small pots so could be a hunger issue too as they move deeper into flower and crave more PK.
Usually I'd say whenever any issue presents itself to flush and readjust the feed, but I don't think you are overfed... If anything they're hungry imo, but then your feed looks good, which is why I think it's a root thing!
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GreenEyezanswered grow question 2 years ago
Leaf yellowing progress in pictures, yesterday vs today -> Curling up, more yellowing
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