"Broomhilda" wrote in message
hlink.net...
What is a VF pond?
snip

In over simplified terms (my disclaimer) there are basically two ways to
filter your pond. One is a biofilter setup where artificial media like
bioballs or lava rock provide surface area for your clean up crew to live
on. The fish produce waste, the bio-crew cleans it up. The second method is
a Veggie Filter or VF. In it's simplest form it can be a second pond that is
at a minimum 10% the surface area of the main pond, and is way overplanted
with plants. The roots of the plants do the filtration.

BV.