the system most parks and golf courses use to keep ponds nice is big
aerators. aquatic ecosystems has these or can configure one for your needs.
oxygen is required by everything in the pond except the bacteria that make
slime and ooze and stink.
you might consider treating the inside of the pond with bentonite (?) a clay
that seals the inside pretty well. after that, aluminum sulfate is used to
settle clay particles. Ingrid


"Chris Barnes" wrote in message
...
final dimensions will be approx. 50'x100' with a small island on one end
(the "shallow end").
Q2: Ponds in this area tend to be really muddy/cloudy, mostly from the
dark
clay in the soil. Is there any way to help keep the water clear
(clearer)?
And yes, I am aware of the poop factor from the ducks & geese