Help with Leaf issue

GanjaDudeLV

Active Member
First Grow, 2 weeks since flip and i have one plant out of 7 that has a few leaves towards the top that are rusting around the edges.

Using fox farm nutes PH 5.9-6 running 500ppm atm growing in coco with run off always around the 500ppm mark.

Attached is a picture, looks like a nute deficiency to me but this is my first grow so i have no idea really lol.
 

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