White spots on fan leaves?

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ravenspyz7

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Hello all i currently am on day 51 of my autoflower grow and am into late flowering. I noticed a white spot the other day on my fan leave and didnt really think anything of it because it was quite small. But then today a few other plans i noticed a couple of white spots. When i blew on the spot white powder came off. Anyone have any ideas?? I hope its not mold...

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It sounds like powdery mildew. I just found some on mine. I am going to try spraying with neem oil.
 
If it is mildew I doubt the Neem will work, you'll need an anti-fungal.
 
what strain are you growing? whats your grow space like? size, temps, rh, lights?
 
Baking soda and water sprayed on it will help. It raises the ph so the powder mold can't grow.
 

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