What leaf problem am I dealing with? Noticing some brown colors on the new and old leaves. Any idea? I'm flushing the plant right now. Looks like pottasium or Manganese problem
Some parts of those looks like some insect eat, look around for possible bugs too.
Some parts look burned, but i'm not sure if is some excess or deficiency of nutrition, I'm having some bad problems too.
First I would check your run off ph. If ph is in range then adding more magnesium is the issue. So a basic calmag would resolve it. Potassium is 2nd most needed in vegging. So having a good amount in nutrition plan is good. Good luck