Ich just took my pair of 6 year old goldfish. (Carnival-won goldfish inherited from friends about 5 years ago).
Over the years, they enjoyed upgrades to a 1 gallon, then a 2.5 gallon. I was preparing to step up to a "real" 10 gallon aquarium
, but I didn't recognize the symptoms early enough.
It's been 12 days since the last fish was removed. I've done several 10%-20% water changes and gravel vacuumings. A couple of days ago I added Stress Zyme. Yesterday I did a 50% water change and put in a new filter element (Aqueon QuietFlow 10). I want to start adding fish, but I don't know if my water is ready.
I'll post my specific questions in the appropriate forums.