HELP!!..Anybody know what this is

I have tried only a few things to resolve this issue...i have 2 other Autos that are fine...

Better pic

samoka_loda said:

Better pic

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Looks like an old P issue to me, I would just pick off the leaves and carry one.

You cant just say my other plants are doing fine, each plant is their own. I bet your other plants are bigger and stronger than this one.

Maybe too much calcium