Kusuri Potassium Permanganate is a reliable powedered chemical that tackles a range of pond pond parasite problems. Use 6.6g of treatment per 4,546 litres (1,000 gallons). When applying the required dosage it is best to spread this over a 1 hour period. It is advised that the water temperature be above 10°C. Note: To maintain a healthy oxygen and avoid water discolouration using Kusuri Hydrogen Peroxide (500ml) is also advised.