1-2 Tablespoons of epsom salts/gallon with metronidazole medication in the morning and evenings. Epson salts acts as a laxative to expel the internal parasites. Do at least a 50-75% right before each dose of metro. Metro only is effective for 8 hours, that's why you do it twice a day. This should be done in a 10G quarantine tank. This method is done if the fish is not eating. If the fish is eating then you can soak pellets with a watered down solution of metro. Let the solution dry into the pellets and feed twice a day (I use a little garlic powder to offset the bitter taste of the metro). This can be done in the main tank and should be fed to all inhabitants just in case they have the parasites also. Each method should be used for 10-14 days.