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Been feeding 10-10-2 bat guano (super grow) and no...
The_Dudestarted grow question 6 years ago
Been feeding 10-10-2 bat guano (super grow) and now some 1-9-1 (super bloom) for 3 weeks, still getting brown dead spots on older fan leaves. Maybe still a phosphorous deficiency and plant taking awhile to intake the nutrients?
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Athosanswered grow question 6 years ago
Rust spots on older leaves are sign of potassium (K) deficiency, on the other hand phosphorous (K) deficiency shows as black, dark metallic spots on lower leaves
motaman311answered grow question 6 years ago
The old leaves/brown dead spots won't go away on the leaves that have already been damaged. The PH drop and feeding too many nutrients will cause lockouts to other elements. I would continue as you are and if anything gets worse, or progresses then look at your feed schedule, soil, + stage of plant. Good luck and happy growing 💪!
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