I haven't seen a biofalls. How does it work?
Jim
Jim, I think Aquascapes came out with the first biofalls (or perhaps the
best marketing of such a set up).
http://www.patios4you.com/images/diagram1.gif
Or google images of biofalls, lots of pictures. ~ jan
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Zone 7a, SE Washington State
Ponds:
www.jjspond.us