When you buy a enew fish for your tank, do you quarantine him to make sure he has no diseases before you put him in the tank? My original supplier has gone out of business and i am a little scared of what could be introduced to my fish from any new store that i purchase from. Yeah yeah I know the basics of checking out the other fish in the tanks to see how they are doing but I thought of see what you guys do when you buy a fish from the store that you have no history with.