I bet many reefer here has been facing issues of disease being introduced into tank especially when new fish is introduced to their tank. It could become a even more serious problem if it is a reef tank where hash but effective medicine cannot be used to treat the fish, and slowly looking at your fishes started to die one by one.
Many of us here do not have the luxury of space of having separate or additional QT tank that could be used during the QT process. So i am starting this thread for members to share their own experience on how they have successfully treated their fish before being introduce into your main tank.