MattR I don't know
what biological filters do

They turn fish waste into fertilizer for the plants *and* for the algae.

Our problem, we ornamental garden ponders, is that we usually get carried away.
More plants, more fish, more feeding the darling fish, more fertilizing for
more blooms. More, more, more!!

I think the pond rarely has time to catch up
before we add or substract something new. :-)




k30a
and the watergardening labradors
http://www.geocities.com/watergarden...ors/index.html