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Upper fan leaf problem

Esoteric_growingstarted grow question 5y ago

Ph 5.8,ph in run off 6.3. EC1.5, run off EC 1.5. Light is 22 inches from canopy, day temp 26, night temp 19. Humidity 58%. Top/middle fan leaves affected, lower growth fine. Thoughts are either too much feed or calcium, other strains are fine but both runtz showing this problem

Esoteric_growing

Esoteric_growing

Esoteric_growing

Esoteric_growing

Esoteric_growing

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Robertsanswered grow question 5y ago

Gonna say a potassium deficiency is what it is showing in a progressive stage. Each strain is different. Potassium is biggest need when flowering. 2nd biggest need in vegging stage. Good luck and happy growing 🌲🌲🌲👊

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