Hey all I recently bought a house and am wanting to raise a few muscovy ducks. I have a 4'x6' pondd kit that goes 2ft deep, that I would like to use for my ducks. I know they dirty the water rather fast. I don't want to change the water every week, so I'm wanting to use floating pots with vegtables to keep the pond clean. Any ideas on what I can grow in the pond that the ducks won't eat?