What toxicity or deficiency could this be

You probably had a root zone imbalance or early lockout, and the flush helped a bit – but then adding banana compost tea likely set things back. It’s high in potassium, but the mix can be unpredictable and may have worsened pH or salt levels. At this stage, less is more: Skip the compost tea for now Just use plain water (pH ~6.3–6.5), maybe one light feed with balanced bloom nutes once she shows recovery Let the soil dry a bit and stabilize Don’t expect damaged leaves to recover – focus on the new growth and bud health now.