How many QT new or sick fish for ich?

[GreenSpottedPuffer]

Originally Posted by tang daddy

I have gotten Ich in my reef tank a few times but with pristine conditions the fish never passes it on and they shake it within 3 days max.

My fowler however hasn't had that luck with bigger fish I add, they seem to pass it to the other fish like a marathon runner passing a baton. however If I don't add sick fish, once they are all well no problems.

Yeah actually I have noticed the same thing over the years. Is the water quality in the FOWLR as good as the reef? I think most FOWLR's have less than perfect water and that gives the fish less of a chance to stay healthy enough to fight it off.

[Slick Fork]

I quarantine everything and subject it to hypo treatment while in quarantine. I have never seen Ich in my tank, and never lost a fish to disease that another fish brought in. I attribute this to my quarantine practice.