This weed growth has really increased in the last 5 or 6 years as there is some drainage into the pond from higher up on the hill where people are building homes on 5 acres lots is probably from fertilizer use on lawns, etc. We cannot prevent this influx.
The weed leaves are 2 or so inches long, like a fat spear shape. Stems are vining and rooted in - they seem to reach clear to the bottom. There is a seed-head looking thing here and there on the stems, and is 2 or so inches long, narrow. The stems look for all the world like philodendron gone aquatic.
Strangely, the bass, frogs & other creatures in the pond are having a wonderful time and have no problem with this canopy of leaves.
My husband spent the last 2 days in a boat hand "weeding", hauling up miles of stems and weeds so we can set up a water line from the pond to our garden. We have to clear this or the leaves will clog the water line filter. It was discourage as he barely made a dent the stuff is so thick. He cleared a lot last year and of course, it grew right back.
Hopefully, you can see the pictures of it at Shutterfly link below: http://share.shutterfly.com/action/welcome?sid=0QaOWrFq2bMXGw¬ag=1 Just click on view pictures, then choose slide show - no need for a password.
Does anyone know what this is and how to get rid of it, or at the least, reduce it so it doesn't choke the pond to death plus make it impossible for us to use our water line.