Pond Doctor Solution is an effective medication used for the control of various freshwater parasites, Trichodinia, Costia, Chilodonella & Flukes. It is also an effective solution for improving water quality & clarity by clearing cloudy water of organics. One bottle (16 oz) treats a 6000 gallon pond. It is formulated for 2 ppm based on using a 16 ounce bottle in 6000 gallons Directions: Treat before noon. Increase circulation & aeration. Mix well in gallon pail of water. Disperse evenly around pond with extra water agitation.Water should hold pink hue for at least 6 hours. Repeat dose if pink color disappears within 45 minutes. Repeat with half dose (1 ppm) if pink color disappears after 1-2 hours. Use protective gloves.