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I've been getting these plants for two cycles, how is this possible?

BunnyBudstarted grow question 11h ago

Leaves yellow & curl in 2 autoflower cycles. Day 25–27°C / night 21–22°C, RH 50–58%, VPD ~1.2–1.7. 60×60×180 box, pots 6.5/6.5/5/3.2 L. Lights: SF1000 (70–80% dim) + SF1000D (fixed), 16h; 34–37k lux top, 28–29k side. BioBizz ~50–60%, pH OK. Light stress or root/EC issue?

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Nocone_Purpleanswered grow question 6h ago

Looks like a mix of light stress and root issue bro The yellowing and curling from the top usually point to too much light or VPD a bit high, while the lower leaves show signs of nutrient lockout or poor root uptake. Try lowering light intensity slightly (maybe 60–65%) and make sure you have good drainage with consistent runoff. A light flush might help reset the medium

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m0useanswered grow question 11h ago

looks burnt.

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