Eco Pond Clear is an all natural, microbial based product effective for maintaining better pond and lake water. It contains absolutely no synthetic chemical ingredients. It is a concentration of selected, proprietary, naturally occurring microbes which act to bring pond water back into ecological equilibrium. It reduces organic sediment and particulates in ponds, it reduces sludge, enhances conditions for aquatic life and leaves the water looking clearer and cleaner. Pack contains 2 Sachets. Each sachet will clear 4000 litres of water.