Prazi-pro treatment takes 5-7 days keep a close eye on your fish, there is realy no other way to get ride of flukes in a system. you can do anouther bath tomorrow if there are still patches of flukes on him tomorrow,this would only happen if there where any free swimming flukes and youdidn't treat tank right away. My self I would have started tank treatment before putting the fish back in, by the way if you have flat worms the treatment should get ride of them also. So you have to watch for anything floating and ID it as flatworms give off a toxin when they die. Just tring to give you a heads up and not tring to alram you, just be watchfull.

Bill

Bill