This is a repost of my original problem the it on uploaded 1 here is the rest the coco was not pre sock in cal mag that are getting cal mag everyday 0.5 per l thay are in flower but seem to have issues again deep purple color on leaf stems
Stop watering them daily as they do a lot better with a dry peroid.You want to roots to go looking for the food.They're certainly stunted,Cocm from the hydro shop doesn't need presoaking with anything it all buffered.
If you’re at high ppm/ec back off a little. Def magnesium but you may wanna recalibrate your meters and check your ph because uptake of your cal mag isn’t happening.
Best of luck in your grow.