Clear Water Enzymes are a liquid enzyme used for reducing nutrient loads in ponds, dams and lakes. It is a natural product that greatly improves the overall health of aquatic systems by increasing the amount of beneficial bacteria that can break down pollutants. Clear Water Enzymes treat the cause of the problem (excessive nutrients) as well as the symptoms and are a great alternative to chemical treatments. The premium enzymes are a blend of standard and ultra enzymes, and are used in moderately polluted ponds, for ongoing maintenance doses and as an economical treatment for large water bodies. 1L treats up to 1.4ML (1,400,000 Litres).