Two days ago I found the first signs of ich on my betta fish (white dots all over his head and body).got medication and so far have treated 3 days being today the third day. As I checked on my little guy today I noticed he hasn't got any white dots on him but still gave the medication. The weekend I have to miss the medication and do the 6th dose on Monday. What I would like to know is how long should I carry on the treatment for to make sure they are dead and if I should do any water changes as my pet shop said not to clean the tank (obviously remove food and remove carbon filter). My little guy has been swimming round quite happily playing through his air pump and eating quite well aswel. So yh any help like.