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Burn leaf
Experimentgreenanswered grow question 5 years ago
Hello
My opinion would be calcium deficiency, those copper rusty spots are an immediate cal thought for me. But i see you have calmag in the diet. Some plants are very calmag hungry so it could need an increase, otherwise its maybe not being taken into the plant because of a ph level or sometimes high potassium will block it out.
I think the cool temperatures will change your bud color, and sometimes the leaves but its more of a whole leaf change versus spotty changes.
Fruitgroweranswered grow question 5 years ago
Too much potassium (k) can cause lockout to calcium and magnesium and this is what the rusty, yellow, spots mean. 👍🌱
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GaiaGreenGiantanswered grow question 5 years ago
These leaves look to be in mid to late stage of a calcium deficiency. Look it up. It’s common mid flower when growing in soil. Garden lime will provide some in the long term and help balance ph. Cheers 🍻
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