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Grow QuestionsLight burn or nutrient issue?

Light burn or nutrient issue?

Ezdeezy89started grow question 2 years ago

Light burn or def? 83-85 temps, same with leaf surface. 1000w HPS 24-30 inches from canopy Always run my flower ppfd around 1200umol with 1400 ppm co2, up to 1500 umol later in flower. I'm 3 weeks in, never had this issue but I can't figure out anything else that it might be.

Ezdeezy89

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Leaves. Color - Yellow

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Robertsanswered grow question 2 years ago

What is the substrate pH? Would check that first. If that is out of range then that is the issue.

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