I have a fairly large pond in my garden with a re circulating water fall in
it.
We have a large amount of fish (about 150) of mainly Goldfish (large and
small) and a couple of ghost koi carp.
Over

The fish are over crowded and will continue to foul the water and die.
Jerri

http://www.fringeweb.com/Ponds/JerrisPond