We got an idea, and lookie what my husband did for me today!!!
This is our combination fountain /fish pond filter. At least when we are done that is what it is going to be, we hope.
Right now we are looking for a fountain type of thing, that is flower shaped, so it can double as bird bath/water fountain, and.... to oxgynate the water. it will go on top of the pipe sticking up that you see in the photo.
inside the barrel we are layering river rock (small stuff), quilt batting, miner's moss, and more rock.
I am kind of hoping I might find some small water plants that might grow in there well, and can take being uprooted about once per year so we can change batting and rocks (or more often as needed).
just thought i'd share!!! hugs, peg