I use the same formula with very rare occurences of plants showing some minimal symptoms in leaves... usually so late in flower and progressing so slowly it doesn't matter.
A good formula works on 95% of plants in my experience.
Seems to be predominantly at the top with thin leaves forming -- Could be the light. I don't think this is a deficiency or tox. Ensure pH hasn't gone off the rails.
Otherwise the symptoms point toward a few different things, but also the symptoms are not quite right, either. Need to cross-reference more info. if it's soilless, a glance at ppm breakdown (if consistently fed) would likely point toward a culprit.