Og kush showing signs of discomfort lol any tips

Hey everyone I’m in the 5th week of flowering and overnight this problem really got worse! I’m currently treating it for cal deficiency for 2 days now lightly foliage feeding and I noticed some discoloration coming back. I’m using general hydroponics 3 part flora series plus diamond nectar and kool bloom. I think I might’ve missed a cal mag when changing out my dwc buckets

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