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Black spots on leaves

Trickotreat47started grow question 2y 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.

Trickotreat47

Trickotreat47

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Trickotreat47

Trickotreat47

Trickotreat47

Trickotreat47

Trickotreat47

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Leaves. Color - Dark-brown

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Organomananswered grow question 2y 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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