worms

catfishtabbi

Is it common to take two weeks to see a worm on your fishs' mouth ? I have lost 5 fish and i see the last one had a white string like worm hanging off of her lip.I put one of my honeys in there now he goes up and down the glass and doesn't eat too well. I can purchas med today. If i treat him in the tank will it be a good tank to put a betta in again?WHAT is the safest treatment for ME to use for this type of worm ?Thanks