Did a bit more LST to try and open up plant and maintain a level canopy. Still feeding veg food with a little extra nitrogen. Noticed an overall yellowing which I hope the nitrogen fixes . Have been adding Calcium and magnesium to EC 0.3 but notice purple stems will bring Cal/mag up to EC 0.4 see if that helps. Transplanted into 3 Gallon and 5 Gallon cloth pots. Coco coir and perlite seems less messy than peat or pro mix.
Looks like issues in the root zone. Test your runoff. I would bet the ph is in the 4.5-5 range. This will affect the uptake of nutrients the plants need in flower.
Thanks Kush-queen, DoctorGreenThumb, and StaresAtPlants for your answers. Seems like the leaves come from both top and middle of plant. Run off is 5.4, 5.5, & 5.7 for the different trays. PH going in is 6.0. Plants get watered with RO water every night, I run 6.0 PH, temp 23 EC between 05 - 1 or 500 - 1000. Get plenty of runoff.