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PEST OR NUTRIENT PROBLEM?

coocistarted grow question 5mo ago

GG#4 FEM. 2nd week after the flip to flowering. New growth doesn't seem to be affected.I can't tell if it's a nutrient or a pest problem. Overall info: 18-23°C, RH 60-70%, 6 weeks old, used synthetic nutrient for veg 7:7:6 NPK, idk should I cut off affected leaves, pls help thx

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Leaves. Color - Dark-brown

Setup. Strains - Photoperiod

Techniques. LST

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AsNoriuanswered grow question 5mo ago

Ph, do you measure it and adjust , before loading pot ??? Looks like calcium, not any pest. I see hair on second photo, keep grow area clean. Maybe i see some signs of white powdery mildew.

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m0useanswered grow question 5mo ago

looks more like nutrient issues to me. Calcium likely. https://420life.com/wp-content/uploads/2021/10/Marijuana-Leaf-Deficiency-Chart-scaled.jpg

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