Seeing this same discoloration on all the plants. 3 weeks old. Coco. Drip irrigation. Tent is 75* 65%rh. pH is always 5.8-6.1. ppm in the rez is 600, runoff is 285. Light on 20/4. I haven't been adding any cal/mag since the nutes say I don't need to. I did wash and buffer the coco. 1st time I've used this line of nutes
