water celery. variegated is pretty.. plant it right on edge of the pond and let it
grow into and out of the pond. also, louisiana iris spread well, good upright form.
they split containers.

"Stephen M. Henning" wrote:

I have a 20,000 gallon pond (17'x47'x2'-4') with just minnows, no Koi.
I put my filter plants directly in the pond rather than in a special
veggie filter. My pond is spring fed, so I need fairly aggressive
filter plants. The pond has stone wall sides (old swimming pool) but I
have greenhouse benches under the water around the outside so I can use
marginals or under water plants. My biggest problem is string algae.
It even grows on the end of the spring pipes, so the spring water has a
fair amount of nutrients in it. What are my best choices? Zone 6.



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