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What deficiency is this ?

LetsGrooow
LetsGrooowstarted grow question 4y ago
Anyone know what deficiency this is? All 3 plants that are flowering have the same issue. Seems to be interveinal chlorosis that is starting from new leaves at top going down. They are 40 days old.
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Week 5
Leaves. Veins - yellow between
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TinyTenter
TinyTenteranswered grow question 4y ago
They say that when you get a deficiency at the beginning of flower, it could be a potassium deficiency. That usually affects older leaves first though. Is your light too close? Cuz yellowing tips can be light burn. Light burn and potassium deficiency look a lot alike. Hope that helped.
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AskeoneLSM
AskeoneLSManswered grow question 4y ago
I think you give too much nutrients mate...I have that in my first grow,looks like mine ✌️✌️✌️
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PenguHB
PenguHBanswered grow question 4y ago
They may need extra cal-mag from now on. I noticed mine had the same issue when started to flower. Also in early flower you can still feed them with grow nutrients to make sure they still have nitrogen to develop.
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Hashy
Hashyanswered grow question 4y ago
You may have cut out the nitrogen to quickly. They still need some at the start of flower.
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PaxIlluminare
PaxIlluminare
Does anyone one know the deficiency causing the leaves to yellow in this fashion?
Leaves. Curl down
Leaves. Veins - yellow between
Leaves. Color - Yellow
3y ago
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