Have you done fpe. I took my banana peels sliced them up nicely added some lactobacilli serum and molasses and let that ferment for about 2 weeks untill ph hit 3.5, i haven’t used it yet but i will my next grow. Bananas are good source of potassium, also doing an alfalfa ferment and stinging nettle ferment, also doing a ferment of the leaves i plucked from the plant. Seeing i am trying to grow cannabis, cannabis leaves should have most of the stuff i want to give to my cannabis :) next run, all these ferments and teas.