George Patterson wrote:
Take *all* the fish out and transfer them to a hospital tank. Treat them
there with copper (I prefer "CopperSafe") and keep them there for 4
weeks to allow the parasites in the main tank to die.

Ack! It's funny as I just read about the value of a quarantine tank
about a week ago, and now that's been hit home. But, I probably picked
it up on the tang the first week that I had my tank and still a very
green newbie.

--Kurt