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Root rot?
m0useanswered grow question 4y ago
It would only be root rot if your overwatering heavily and the medium has got compacted to much causing lack of oxygen to the roots.
I would also expect this to show on the whole plat not a new leaves.
leaning more nutrition relayed.
Check to confirm your feed is complete and providing enough for the plants.
Good Luck!
Wrongholn519answered grow question 4y ago
I've got the same issue and I think it's damage caused by fungus gnats. They got out of control with my latest grow and my work schedule.. it's left a few brown spots on some of my leaves.
I've eliminated so many other possible causes. It's either from the fungus gnats I had or its possibly a calcium deficiency but I don't think it's calcium.
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