Started these plants over 7 weeks ago. At first plants were a really nice green, and now they are starting to get lighter and lighter. Thought it might be a Cal-Mag issue but it didn’t seem to solve the problem. Some leaves have a little purple on the outside on some blades
Low temps and reduced uptake, to me it more mag issue, but I could be wrong, wait for more answers.
I see calcium too, but violet could be genetics, cold or one of deficiency, ussually magnesium ...
All the Best !