permaculture

[israel <theshadu@gmail.com>]

Hi,

   i have recently read that bentonite can be used to seal a surface if 
the soil is not a pure clay soil. I'm thinking to combine bentonite use 
with a macrocatchemnt or a swale to retain water in spring and summer as 
much as possible. Anyone have experience with bentonite? Could it be 
used to seal a pond too?
 
all the best,
            israel.