Ceiba speciosa Nutrient Deficiency?

[hemmy]

Floss Silk, Ceiba speciosa, leafed out indoors getting the middle light from T5s and full spectrum LEDs. It’s in pine bark and pumice watered with somewhat harder tapwater until last several weeks of vinegar acidified water (7.5ml/gal). The leaves have odd stippling with raised light color areas. When I see stippling I think mites or other sap suckers, but none on white paper test or under hand lens. It just went out to full shade today when I noticed it.

The Google led me to potassium or manganese (or was it magnesium) deficiency.

Any other guesses?

Thanks