100% natural. Safe for all aquatic life. Lasts for 3 months.
Application Directions: Place the pellets in the included media bag at a rate of 1lb (0.45kg) per 500U.S. gal (1893L) of water. Float the bag in the centre of your pond or in an area where there is water flow; this will carry the secreted enzymes to all areas of your pond. There may be a slight yellow tinting to the water; this will quickly disappear.
At water temperatures below 50°F (10°C), it generally takes 6-8 weeks for full effectiveness or 1-2 weeks when the water temperature is 68°F (20°C) or above. Do not dose very dirty ponds stocked with fish when the water temperature is high.
One 2.5lb (1.13kg) bag treats 1250 gallons (4732L) of pond water. For maximum effectiveness, replace pellets every three months.