I am trying out jacks 3 2 1, using jacks, calcium nitrate, epson salt, sea green hydro and silicia. These are veg plants in coco ph has been between 5.9 and 6.1, have been getting jacks for about a week now. This is starting to show up on a few leaves. ideas?
![problem.jpg](/data/attachments/2953/2953639-dde48b94a53daffa4b94cc6c5bf58edc.jpg)