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Re: cheap copper treatment

Bob Olesen writes:
> I have a 400 gal pond with a red and hair algae problem. I'd like to
> experiment with copper as a possible treatment but really hate to use/pay
> for those little aquarium size bottles with this volume of water to treat
> repeatedly.

I remember years ago people used to use pennies for sources of copper. If
memory serves it was one or two per 10G of water which were placed in the
filter flow.