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Is it this or that?
CaptainGarystarted grow question 4 years ago
My best guess is Overfeeding.. I sat down to try nut it out, but I only guess. What is the deal here folks?
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Experimentgreenanswered grow question 4 years ago
Hey 👋
So it looks like it's dominantly on the upper canopy? I look down below the discolored leaves and things look fairly green and healthy. So with that being said I'm also seeing some turned up edges on other leaves. I think they're just having a light/heat stress. I see you moved the light up to 50cm, that's probably the best move so now I'd wait and watch for any new damage...if it stays about the same and the cupped leaves smooth out a bit...problem solved.
You could maybe increase fans blowing over canopy to bring any leaf surface temp down.
Happy flowering ✌️
MangoDuduanswered grow question 4 years ago
The plants seem to be in a micronutrient deficiency, like Sulfur one that put on clorosis the upper leaves. In my opinion give them a molasses rich on magsulfur ( like sweet of botanicare) that helps the plant in the final stage in photosintesis, fattening and flavour
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