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HELP! Nutrient burn or deficiency?

Kinghaze
Kinghazestarted grow question 5 months ago
HELP !What is it ? Nutrient burn?or deficiency.I thought it was a cal mag issue.What do you guys think what the problem is ?
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Leaves. Curl up
Leaves. Color - Yellow
Leaves. Color - Dark-brown
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Roberts
Robertsanswered grow question 5 months ago
Brown curling in tips is nutrition burn. I see a lot of dark green. I am curious if you are getting proper run off when you feed. I think you have a salt build up of old fertilizers. Without proper run off each feed the build up causing toxicity, and deficiency at same time. Hence the spotting also on leaves. I think that is the real issue. A salt build up.
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AutoflowersSucK
AutoflowersSucKanswered grow question 5 months ago
Ya they are burned from a hot dose of nutrients.
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NicoGG04
NicoGG04answered grow question 5 months ago
Puedes controlar en el runoff como esta el medio de cultivo y confirmar si es un exceso. Puedes medirlo con un medidor de EC, si el runoff tiene valores de EC muy altos y con mucha diferencia en el valor de entrada, tienes sales acumuladas y por ende el ph deberia estar bajo. A simple vista te podría recomendar solamente riegos con agua con bajos ppm hasta que recupere, si es una automatica es muy posible que merme mucho la producción final.
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JUNGLE_B4RNS
JUNGLE_B4RNSanswered grow question 5 months ago
Yes it’s nutrients burns. Why, it’s because the EC of the soil is too high, turning the tonicity of the media into an hypertonic condition where the osmosis pressure from the cells membrane of the roots is reversed and fluids gets sucked out from the plant.
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