Water Stabilization System For Decorative Ponds,Rapidly And Safely Establishes Bio-Filter And Breaks Down Waste Organics, Ammonia, Nitrite, And Nitrate. Direction For Use: Shake Well Before Use. Turn Off Uv. Use 50 Ml For Each 400 L (100 Us Gallons) On The First Day With A New Pond. Then Use 25 Ml For Each 400 L (100 Us Gallons) Daily For 7 Days. Fish And Other Aquatic Species May Be Introduced At Any Time As Long As Dosage Is Maintained For 7 Days. For Optimum Biofiter Performance Use 5 Capfuls For Each 400 L (100 Us Gallons) Once A Month Or With Each Water Change And Whenever Introducing New Fish Or Whenever Medicating A Pond.