I’m growing in 10 gal fabric pots with coco perlite mix. I’m about to start week 7 of flowering and I’m getting yellowing/ burnt edges around the margins and a claw on the top half of the plants. It started at the end of week 5 of flower, Along with brown spots on fan leaves closest to the light. I believe I’m having a ph problem causing maybe a ca lockout. My ph in is 5.8-6.0 and runoff ph is 4.7. I’m feeding .6 ec nutrients in am about a gallon and then again in pm with about a gallon. My runoff ec is 1.0-1.3 ec been coming down since I started feeding lighter twice a day. I would normally not worry to much about runoff ph but my plants are telling me something is wrong. Temps in tent are in 70s with 50% rh.