On Tue, 10 May 2005 06:10:14 GMT, Greg Cooper wrote:

We have 12 fish total, gold fish and koi. The largest koi is about 7-8
inches. Not very big so water quality has not been an issue with lots
of flow rate up through the filter topped with a watercrest bed and
plants all around.

The problem we've seen locally with the AS-type system is with koi and
damaging themselves on the rocky bottom & sides, and all the places
aeronomas bacteria can hang out to infect an open sore. To be on the safe
side, I'd use Koizyme.

I don't have a rock lined pond, but I do have them on the sides. Once my
koi got to breeding size/age, nicks got infected, that's what sold me on
the continuous practice of using Koizyme or Lymnozyme. ~ jan

~Power to the Porg, Flow On!~