Treatment #1) SALT DIP- Add non-iodized salt to water at 10 tablespoons per gallon or 8 pounds per 32 gallons. Dip fish in this solution for 3 to 5 minutes or until it starts to roll over. Repeat 2 more times at 12 hour intervals.
Treatment #3) POTASSIUM PERMANGANATE- Potassium permanganate is effective against all of the microscopic parasites listed above except ich. If you suspect that your fish may have parasites, but you do not have access to a microscope to confirm your suspicions, potassium should be your first choice for treatment. It is somewhat more risky than salt, but only when you fail to measure your gallonage and dosages accurately. Potassium will turn the water purple or pink when first added to the tank or pond. It will eventually turn brown, according to the amount of dissolved organics in the water. A 25% to 50% water change is recommended before beginning the treatment. Bypass the filter, ensure adequate aeration, and add potassium to the water at 6 grams (1 level teaspoon) per 800 gallons, In large systems, dissolve the crystals in warm water and distribute evenly around the pond or tank. Note the color of the water by submerging a white saucer 2-3 inches below the surface. If the color changes from purple/pink to brown/amber in less than 1 hour, redose at 1 teaspoon per 800 gallons. If the initial color change comes after 1 hour has elapsed, retreat at 1/2 teaspoon per 800 gallons. Monitor the color of the water for the next 10 hours. Whenever the color is brown, add more potassium at 1/2 teaspoon per 800 gallons. The key for effective treatment with potassium is to maintain the pink color in the water for 10 hours. After 10 hours, do another 50% water change or add dechlorinators to neutralize and de-color the potassium. Repeat the treatment in 3-4 days to ensure eradication of the parasites. The treatment regimen here is excerpted from Dr. Eric Johnson's excellent book "Koi Health and Disease". It contains more detailed information concerning the use of potassium and other fisheries chemicals used to treat goldfish and koi.
Treatment #4) DIMILIN- Mix dimilin with water @ 1 teaspoon per 2,000 gallons every 30 to 60 days for control of anchorworms and fish lice. These parasites will not clear immediately. According to the water temperature, they will be eradicated anywhere from a few days to a few weeks.