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Nitrogen toxicity? Deficiency? Something else? Stumped!

Lemme_Adamstarted grow question 2y ago

I don't get it. Is this N toxicity? Serrated upturned edges, clawing, slow growth. But how? FFHF 75% FFOF 25%. Just Cal-Mag water. No food. NLS in bottom 3rd of pot. Not wind burn. Not too hot/dry at all. N deficiency? Yellow leaves on first bottom two only. I'm stumped.

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Leaves. Curl down

Setup. Strain - Autoflowering

Feeding. Deficiences

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BerrySweetHighanswered grow question 2y ago

Yes, this is N toxicity. You got nutrient waste salts inside your soil. You need to flush them out. And in the future water till runoff to prevent this problem for the rest of the grow. For the flush you give the pot volume in water with pH 6.2 without nutrients. For the runoff you want 10% from the water that you give to drain from the bottom of the pot.

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FraFra__frankenstoner_Two_days_in_a_dayanswered grow question 2y ago

Congratulation! You have perfectly healthy plants! The yellow leafs got not enough light. Thats all. Happy growing!😎

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