MrTuskfish
Team RC
I'm now wishing I'd saved all the "ich" literature I've seen and read on crypto. There are strains of the protist that have been found in cold water, in warm water, and in varying salinities. So much information is left out of the discussion. If you truly want to have an "ich"-free aquarium, your tank(s)/ QT/ fish room need to be treated as a sterile laboratory. Keep the display tank fishless to ensure the primary hosts are no longer feeding the parasite. QT your fish with copper and never add anything to the display tank without proper quarantine. Otherwise, you are rolling the dice.
:artist:
I couldn't agree more, and the ''rolling the dice" is a perfect analogy. So many hobbyists (I was one, too) are convinced they can beat the odds. But; sooner or later, the house wins. The percentage of new threads on this section of the forum that deal with problems that could have been prevented by the steps you mention must be well over 50%. (IMO, a low estimate.)