Rust on newer fan leaves. PH is normal COCO

Miitch420

Member
Can anyone help identify this problem.

sitting in a 1gallon pretty root bound. I feed it once a day until runoff, I usually just sprinkle some a-b veg flakes on the top of the soil and take the water from my flowering nute res. Any suggestions on what’s happeningEF78F89D-F6E5-4299-9CCC-1574E635F9AE.jpeg
 
Seems to be on the newer higher leaves
 

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You might consider using nutrients designed for coco.
If you were using the correct nutes I would suggest a flush with 1/4 strength nutes and start feeding daily to run off.
It looks like a calcium deficiency.
 
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