What is the danger of this?

Sivitri

I started my 12 gallon over a year ago and around that time I put 2 oc clown fish in it. When I purchased them and all of the other fish in the tank appeared healthy and active with no signs of disease. A few days after I put them in the tank, I went back to the same lfs to buy some new supplies and noticed that the tank I purchased them from had a few fish with ich. The clowns have never shown any signs that they are ill. I am now in the works of putting together a 46 gallon tank and I am interesed in putting them in the new tank and breaking down the old 12g. My question is if I put the clowns into the new tank will they infect any new tankmates that I intoduce? Or would it be better to leave this tank running with these guys by themselves?

Pasfur

If your Clowns go 90 days with no signs of ich, then you are safe. This is the approach you need to take.