Potassium Permanganate Treatment Procedure
Potassium permanganate consumes large quantities of oxygen during the treatment .. When potassium permanganate is added to the water it will turn the pond a bright purple at first and then Pink. As long as the water is Pink it is active and is oxidizing any organic matter in the pond including parasites. When it turns to a yellow color is has been used up and is no longer working.
Remove all plants from the pond and fish from the pond
• Remove as much leaves or debris from the pond bottom as possible.
• Empty all skimmer baskets.
• Turn off ultraviolet light.
• Bypass the biological filter. If you cannot bypass your biological filter, do not use this process. Potassium Permanganate will kill all the good bacteria in your filter, which will cause serious water quality problems.
• Sunlight tends to break down Potassium Permanganate, so if you can begin the treatment after the direct sunlight is off the pond it can be helpful.
• The standard initial treatment dose is 1 level teaspoon per 600 gallons of pond water. If the pond is extremely dirty you can increase this dose by 25%. If the pond is brand new and has very little algae growth, you might reduce the dose by 25%.
• Potassium Permanganate is very toxic. Do not breathe it or get it on your skin.
Day 1- Add the proper dose of potassium permanganate to the pond. Note the time it takes to change color. As soon as it changes to a tea color you can stop bypassing the filter.
• Day 2- Add the proper dose of potassium permanganate to the pond. Note the time it takes to change color. As soon as it changes to a tea color you can stop bypassing the filter.
• Continue to treat the pond each day until the pond stays pink for at least 8 hours at one time. Skip one day and then treat the pond one more time except reduce the dose of potassium permanganate by 20%. After the pond has stayed pink for the second 8 hour period, neutralize the pond with Hydrogen Peroxide at a rate of approximately one quart for every 2,000 gallons. Within 30 minutes the water should be very clear. Perform a 40% water change and you should have parasite free very clean water. The only exception may be ich. If you suspect ich you should replace the salt lost during the water change and maintain it for an additional 10 days. Do not forget to add dechlorinator to the new water.
• We have also had great success with making a paste with the Potassium permanganate and a small amount of pond water. If your pond fish have any ulcers you can dab it onto the ulcer, and it will cauterize the wound. These fish can be returned to the pond immediately

We do not recommend leaving your fish in the water during this type of total pond treatment.
Potassium Permanganate is a very effectrive treatment for a variety of Parasites, Bacteria and Fungus.