For use with ornamental fish ponds only. This product can be used to increase Oxygen levels in pond water, and also to remove discoloration from the water after a course of Potassium Permanganate has oxidised from pink to brown. This product can also be very useful when applied to pond water prior to the removal of sludge. The Hydrogen Peroxide will neutralize Hydrogen Sulphide released from the sludge and detritus being removed. 1 litre treats 8800 gallons.