#2 bearwithfish User Aquariums 1st off welcome to TFK!!!!!!!!!!! 2nd there is an article about QT's here <a href="http://www.tropicalfishkeeping.com/s...ne-tank-35693/">http://www.tropicalfishkeeping.com/s...ne-tank-35693/</a> but the short answer is clean water is the best medicine!!! add chemicals only as a last resort if you know what you are adding them for!!