Primrose and parrot feather.






On Wed, 05 May 2004 12:11:50 GMT, "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.