Might have to eat my own words re: quarantine

[George]

Originally Posted by Aquattro

I'm in the same position. Even if I had quarantined, I would have put the fish in the main tank after a month. He didn't get sick until 5 or 6 weeks, so this still would have happened.

You can prevent it by doing proper quarantine. Many people quarantine their fish for 2+ months. During this period, many people also do prophylactic treatment. One of my favorite is hypo for 4+ weeks, prazi-pro for a couple weeks, and then a couple weeks of observation.
Fish can live for years. I don't know why we can't wait a couple months before we put them in DT.