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Hey. I just need some opinions on this picture. Trying to figure out if it's stress related or if this is nute burn.

I transplanted the plant last night and watered it lightly. I used a 20 ounce bottle to water 8 plants in the same size pots, and this appears to be the only one with this problem. In that 20 ounces there was about a 6th of a tablespoon of Miracle Grow plant food (3-1-2 ratio; the food recommended by ganja guerrilla). The lower leaves were previous damaged by pre-nuted soil in a smaller pot. I took as much soil off the rootball as possible before transplanting. The smaller plants in the same soil that also recieved nutes last night, so far seem to be doing fine.

I'd like to say I think it's just stress related, but I don't know. This is my first grow and I have nowhere near enough experience to be sure about this. Also, I only found those 3 spots, and there were not there last night before the transplant.