Burntup
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Leaf edge roll up is usually but not always heat related and your plant looks like it's got a magnesium issue but I can't be positive because of the purple light, can you get a picture without the purple LEDs on ?What does the leaf curling usually mean for indoor growers
Whats your ph been like? Seeing cal, mag maybe potassium deficiency.
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Agree that usually that curling happens from heat.
Yeah I'm thinking so too but it's hard to tell with those photos. Only reason I say maybe is light bleaching/burn sometimes looks very similar. But I think your right. Most likely potassium.And potassium def.
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