"CanadianCowboy" wrote in message
.. .
Just wanted to share a very inexpensive Bio Filter with some mechanical
filtering that can easily be built at home.

http://www.mvwgs.org/filter.htm

The problem with that filter is with trying to clean it. It is labor intensive,
since you have to get it out of the pond, take it apart, clean it, put it back
together (or replace the filter material if necessary) and then put it back in.