I am also constructing a biodiverse pond. I know water hyacinths breaks down duck poo and uses it to grow. Ducks also like eating everything. So I used high tubs, cut out center of bottom, placed rocks inside then put my hyacinths inside tubs. I have a 16x32 pond and I have 5 tubs full of hyacinths. The rest I placed in the pond for ducks the pond was half full of plants and by next day, you could find one plant except what’s in the tubs. So if I were you, find tall planters(we reused our cattle protein tubs once empty), to put plants in.
