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N excess... or calmag deficiency ???
BloodSweatBeersstarted grow question 4 years ago
I'm having some rusting on new growth. It's my second grow and I'm conflicted if this is N excess or Cal/mag deficiency
Detailed feeding info is in my journal
Thanks in advance
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The8thChevronanswered grow question 4 years ago
Dark green leaves followed by downward clawing and burnt tips is very indicative of nitrogen toxicity. Feed with pH'd water a couple times and see how she responds. The damage won't be undone, but if the spread slows and eventually stops, you'll know you're good.
The8thChevronanswered grow question 4 years ago
I disagree with Smoke on this one. With 4 plants equidistant from the center of the light, 16" should get you around 600ppfd. I would even consider dropping down an inch or two as in flower, they really want 700-900 ppfd.
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smoke24answered grow question 4 years ago
May want to look at light distance, I like to be at 22 inches at this stage of growth, too much light can cause those symptoms, had it happen to me last grow, I had one plant that was sensitive to light. Happy growing.
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