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Black spots on leaves

Trickotreat47
Trickotreat47started grow question 13 days ago
So I have those black spots on leaves on top of the canopy of my plants. Can someone please explain what are those and how can I treat it? Also the edges of the leaves on top of the canopy are brown and crispy.
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Leaves. Color - Dark-brown
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Organoman
Organomananswered grow question 13 days ago
The burnt tips are a nutrition/pH issue. The black blotches could be a fungal problem due to poor air exchange/high humidity.
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