Cloverleaf Sludge Answer is a  live beneficial bacteria culture that helps to bio degrade the harmful solids that build up in the pond and the filter which can become a breeding ground for harmful pathogenic bacteria, these solids will also reduce the amount of saturated oxygen present in the water, “Sludge Answer” is highly recommended for use during periods of hot weather when a reduction in saturated oxygen levels is common, used on a regular basis it will help to maintain a healthy pond.“Sludge Answer” is the perfect follow up to the no 1 selling “Blanket Answer” to help reduce the residues left after application.Use 100ml per 1000litres (220gal) of pond water for the first application with follow up doses of 50ml per 1000litres (220gal) every 28 days. Ultraviolet clarifiers should be turned off for the first 24 hours after each application.Safety information: