Hey OhioGrown1795, looks like early stages of copper deficiency to me, make sure the nuts you are using are cannabis specific, flush system and pH to 6.2-7, if leaves start to turn metallic then it's late stage. -RJ
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Hey beardface420! Looks like you have phosphorus deficiency. Make sure your grow room is temp 60f +, flush system and pH to 6.2 - 7 . -RJ
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Hey savingson! Looks like you have some potassium deficiency, which is known for its distinct "S" shape of the fan leaves. Recommend flushing, and pH to 6.2-7 . -RJ
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Hey there four loko! Looks like you had some magnesium deficiency and now have some heat stress an top of that. Check the temp of room should be at 60f. Too late into flower to fix mangnisium issue ( all by looks need more images) - RJ
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Could be phosphorus deficiency what color is that stem? Either way flush and pH to 6.2-7 if using soil.
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Overly wet top soil, spots, dirty ish grow room, looks like gnats to me. Clean clean clean do not leave dead leaves around
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