No more sludge from Tap Aquatics helps to break down unsightly pond sludge and fish waste using an infusion of natural minerals, enzymes and additives. A blend of beneficial organisms and natural minerals reduce sludge, silt and fish waste from pond. The waste is broken down into nitrogren to boost pond performance. Simply mix the correct amount of powder with pond water into a bucket or watering can and pour evenly over the pond surface. Any initial cloudiness of the pond will clear within a few hours. Pond Sludge will begin to clear in a short time but allow up to 2 weeks. Repeat if pond sludge or debris returns. No More Sludge Dose Rate:Use one heaped spoonful (enclosed) per 65 gallons (300 ltrs) of pond volume - For maximum effect this dose can be doubled. 1kg - Treats 2,500 gallons / 11,375 ltrs