So I was thinking... what if the "bog" was the top tier and in the "bog" I could run a hose from the pump in the pond up to the bottom of the top tier seal it and put .... gravel in the bottom then soil plant my plants and add a heavy layer of gravel again to keep the soil down (what kind of soil?) .... the water would filter up and spill out to the second tier and into the 3ed in both of those I would keep hyacinth and water lettuce.... will that work?
