General deficiency question...

Hey all,
I was curious as if you see a few fan leaves showing deficiency signs, but 80% of the leaves look fine, if it is the beginning of a deficiency or if it is just a "it happens" kind of thing. Seeing yellow spots on a few of my fan leaves, don't know if i should bump up the potassium or calmag by just a teensy bit, or if i should leave it alone and go on as i was and have been.

Thanks!

Depends, if you use LED or in a softwater or use R.O. water area I would strongly advise calmag.