"~ jan jjspond" wrote in message
...
On Sun, 29 Jan 2006 08:42:37 GMT, "Wanda" wrote:

I've been considering having a go at a biological filter/water feature
using
nutrient hungry plants or mussels in a resin water rapids leading into the
main
pond. I was wondering if anyone had particular thoughts or opinions on
this?
I've seen it done at a pond store & it looks effective. I thought it might
be attractive to frogs & damselflies/dragonflies.

It will work, fish load is what determines the need for alternative
filtration.

My lily pond was a frog pond to begin with, I didn't use filtration, other
than having a spitting fountain with just 2 goldfish. Since I've increased
those numbers and want to make maintenance easier I hope to get the
outside
filter done this spring.

What is the resin for? ~ jan

The "container" I was thinking of using for the bio filter is made from
resin forming what looks like a small river rapid or waterfall. There is a
section up the top which could be used for settling & a deeper & larger
section at the bottom that could be used for planting. The water is pumped
from the pond to the top level then spills to the bottom level before
re-entering the pond.