Well Would never have thought it would work but it does. I have a Nano Pond in the Front Garden. Planted with That Hydroclite ?? that Steve gave me. Flag Iris and Azolla as a Floating plant. Well The Water level has been dropping and i forgot to top it up. The result being that the Azolla has Rooted itself onto most surfaces, any soil has been very well rooted. Can;t even pull it out as its so rooted. Will Get some Pix later.