I suspect this is a Mg deficiency or ph problem. Soil is recycled organic soil reammending with a little blood meal, Bone meal, alfalfa meal, garden lime, and ewc. Pics are from different plants so I'm positive it's something missing or too much of something in my soil. Had the same thing happen last run with different genetics also. Some leaves actually get burned between the veins. Plants recover but yields are reduced. I could just scrap everything and go back to bottled nutes but I enjoy the taste of organic grown buds better. I'm sure with the proper advice I can get my plants back on track.
On another note, I have a blueberry cross that's on her 4th week of flower that absolutely loves this soil mix! Buds growing nicely and no signs of any deficiency.
Better to ask more experienced growers for help than to continue to rob my garden from reaching it's full potential. Any advice would be greatly appreciated. Thanks!