Lichtstress?
der_1gaertnerstarted grow question 2y ago
Can someone help me? It happened shortly after switching to 12/12.
The plants are cuttings. I'm using biotabs as fertilizer.
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Shinsimillaanswered grow question 2y ago
That looks like heat stress.
Did you have high temps for a while?
Otherwise russet mites can cause similar looking damage, but don't think this is from them.
AsNoriuanswered grow question 2y ago
lower leaves are going taco too, light could be, but would not burn bottom so bad, especially when plant next to this looks ok.
when i played with sugars and added too low ph, had same burn marks.
recheck ph meter.
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Leromeanswered grow question 2y ago
Hey,
it looks like they don't like the intense light / heat...
Did you recently increase the intensity of the lamps?
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