Reformulated EcoSystems AquaClearer Extreme Liquid. Aquascape Beneficial Bacteria contains 8 pure strains of concentrated beneficial bacteria including PSB bacteria and enzymes. This combination of natural cleaners helps to maintain a strong biological balance in your pond. Aquascape Beneficial Bacteria maintains a strong biological balance providing clean clear and healthy water conditions. Maintains a balanced ecosystem. Reduces pond maintenance. Safe for fish plants or animals that may drink pond water. Contains 8 strains of bacteria. Contains Photo Synthetic Bacteria (PSB). 750 Million CFU per ounce potency. Contains marigold and vitamin B. 1 Bottle treats up to 5 000 gal./18 921 liters. 1 Pump treats up to 100 gal./378 liters. Size: 250ml/8.5oz.- SKU: AQSCP440