Vetiver grass if you can find it in your area, it is non invasive, not quite as pretty as rice, but probably more effective for waste removal. Also good for erosion control, roots can grow down to 12'. It is the tall grass on my floating island.
1/4 & 3/4 acre ponds. A thousand miles from no where and there is no place I want to be... Dwight Yoakam
