"WilsonKKW" wrote in message
...
I have heard of ponds that are with NO filter..any info folks?

Of the 10 houses in our street, 5 have ponds. Only one of these
has any filtration. All successful ponds, but none with koi, just
comets, shubunkin, and some strange looking blue things about
three inches long that we can't identify. A couple of ponds are
in full sun and a couple are in a lot of shade. It never gets
particularly hot or cold here so we tend not to have problems
with water temperatures. Mine is the only pond with a bubbler
but the others all have pumps for water features. No real
problems with water quality. I scrape the leaves out of the pond
by hand a few times a year, next door net theirs so don't bother.
All of us have explosive plant growth that gets thinned out a few
times a year when the fish can't swim any more, so I guess thats
how all the byproducts get out of the pond.

I feed wheatgerm all year, although less in the winter. Next door
(with the filter) feeds pellets summer only. I don't think the other
three feed at all, or very rarely.