Deficiency in mid flower

@dbrn32 also when do you normally start mpk, and how long do you run it for? Thanks!

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I don’t really use mkp with jacks. Those that were following greengene’s recipe did this for the first 2-3 weeks of 12/12 if i remember correctly. I’m sure it’s on his YouTube channel if you are unable to verify.

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Foliar spray (leaves got sprayed)?
Underside of leaves, any spots?

I’ll check the under side, but none that I’m aware of. And watering g with autopots, haven’t been in the tent with water in a month+.