API PondCare Microbial Algae Clean Pond Algae RemoverFirst bacterial algaecide registered with the EPA (EPA Registration # 8709-10). This product contains patented bacteria to control green water algae in ponds with live fish and plants. The bacteria help establish and maintain a clean pond, free of algae. They also help improve dissolved oxygen levels and reduce noxious odors from the pond.
EPA Registration # 8709-10. Directions for Use: It is a violation of federal law to use this product in a manner inconsistent with its labeling. For Synthetically lined ornamental ponds and water gardens only, where all water is contained without any outflow. SHAKE WELL. Add to the pond, one teaspoon (5 ml) for each 50 gallons or 1/4 cup (60 ml) for each 600 gallons twice a week for the first 2 weeks, then add once a week to maintain control of Green water algae (Chlorella).