ArtfulCodger said:

It's hard to say with much confidence without pics of the whole plant and more info about your setup. Just based on leaf symptoms, arguments could be made for over-feeding (dark color, burned tips and edges), over-lighting (taco-ing, leaf twist, purple petioles), and over-watering (leaf texture, pronounced venules.) But as you said, if these came from the bottom of the plant, some of this damage might be old.

Click to expand...