Ick thread**ongoing treatment

[blood_hound]

Originally Posted by Beverly

Stress alone will NOT cause ich. Ich has to be introduced into a system, either on a new fish, in frag water where there was ich in the tank, a cup of sand from someone who has ich in their tank, or any other means of introduction, before it becomes active. Stress may cause a fish to become more highly infected with ich, but stress cannot cause ich.

That is why it is best to put the fish in QT for a few weeks before introducing it to the main tank