I have had two perc. clowns in my tank for a month now and all is well, I do use a little garlic every once and a while. Is it safe to assume that my tank is disease free?
I assume that by asking this it means that you didn't QT the clowns prior to placing them in your tank? Chances are everything is ok, but I"d consider using a QT for your next fish if you are not already using one.