permaculture

["Anne Erlandson" <aerlandson1972@hotmail.com>]

We are reclaiming an old pond which is full of alders and will need 
something to plug up the bottom of the pond.  Our neighbors' ponds slowly 
drain throughout the summer so we probably need something to seal the bottom 
and would like to avoid having to buy a huge piece of plastic (future 
garbage).  Does anyone have any experience with or information about sealing 
 large ponds with bentonite?  If bentonite is a good way to go does anyone 
have any leads on where I might find some in western Washington?

Thanks!

Anne Erlandson

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