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Upper leaf
gogocrackstarted grow question 3y ago
Although the general condition of the plant looks good, some upper leaves started to claw. I would like to get expert opinion on the cause and solution of this.
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Leaves. Curl up
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SeedlockHolmesanswered grow question 3y ago
They don't look that dark green for a nitrogen toxicity but it could be it.
Do you have your clip fans pointing at the upper canopy?
Wind burn does that clawing too.
GanjaReaperanswered grow question 3y ago
Hey Gogocrack,
This are the first signs of (n)itrogen toxicity, not mayor yet but it is there.
You also have a little bit yellow tips, normaly people will go for overfeeding but since you have low PPM/EC this is not the case.
With a Nitrogen toxicity your leafs will start getting yellow tips as well and start to claw.
Flush your plants a bit and lower your PH.
You use ph 6.7 which is in my opinion a little bit to high, try 6.3-6.4 instead.
Goodluck farming :)
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