On Wed, 30 May 2007 15:36:23 CST, "Paul M."
wrote:

The intent of the new pond is more 'naturalistic' and I would like to
keep water plants etc. which wouldn't like being chemically
shocked!!! I thought perhaps some fish could keep the algae in some
sort of equillibrium. The water does not turn green because of the
constant water turnover, but algae grows from the bottom. Does
anyone see hope for fish??? to be seasonally kept in such a set up to
control algae, or other suggestions?

We see the constant water overturn differently.
Others with flow through ponds have the same problem. I have one
suggestion for clear water and it isn't a guaranteed cure, but I would
bet on it. Determine the size of the pond in gallons. Restrict the
flow of new water going into the pond to about 10% of the pond volume
per week and expect normal overflow, diverting the excess water around
or away from the pond. Add plants to act as filter and add fish
gradually.

BTW the algae that grows on the bottom and sides is an asset. Most
of us prefer to leave that in place.

Regards,

Hal