Yellowing...

What does this problem look like to you?

Week 6 flowering.
Purple Kush
I'm following supernatural feeding program (http://supernaturalbrand.com/feeding-program/) and using pro-mix soil.


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lack of nitrogen mate, i wouldnt worry if your already six weeks in.

yeah deff nitrogen def

Gonna have to let it be this time and give your next set some heavier nutes in the beginning of flower. Trying to fix it now could just make your buds taste like shit. Probably wouldnt help anyways.