API Pond AlgaeFix effectively controls many types of algae in your ornamental pond, water garden, or fountain. This safe, effective water treatment removes Green or Green water algae (Chlorella), String or Hair algae (Cladophora) and Blanketweed (Oedogonium). #1 algae control product for controlling green ponds and green algae Keeps Koi ponds and goldfish ponds and water gardens clean and clear Controls existing algae and helps resolve additional algae blooms PondCare Algaefix will not harm aquatic pond plants, koi or goldfish. It does not cause cloudiness, alter the pH, or add harmful copper to your backyard pond. Does not expire. Note Do not use with Shrimp, Crabs, Lobsters, Crustaceans or Snails. Directions For Use It is a violation of Federal law to use this product in a manner inconsistent with its labeling. For synthetically lined pond and fountain use only, where all water is contained without any outflow. Add 1 teaspoonful for every 50 gallons of pond/fountain water or 1/2 cup for every 1,200 gallons. Thoroughly mix into pond/fountain by adding near the pump outflow, waterfall, or aeration device. Can be mixed in a bucket of pond/fountain water and dispersed evenly around the pond/fountain. Repeat application every 3 days until algae is controlled. Be prepared to siphon out dead filamentous algae. 8 ounces treats up to 2,400 gallons. 16 ounces treats up to 4,800 gallons. 32 ounces treats up to 9,800 gallons. 64 ounces treats up to 19,200 gallons. 1 gallon treats up to 38,400 gallons. 2.5 gallons treats up to 96,000 gallons. Once algal growth is under control, add one dose per week. Weekly treatments will control algal growth and reduce pond/fountain maintenance. CAUTION Do not use with freshwater crustaceans, including shrimp, crabs and lobsters. Warm Weather Caution Before using PondCare Algaefix, make certain that the pond has vigorous aeration, i.e., a fountain, waterfall, or aeration device to avoid fish loss due to low oxygen levels. When algae is controlled and removed by the filter or settle t