Beneficial Bacteria and enzymes that are scientifically blended and tested to produce maximum results in ornamental ponds .Beneficial Bacteria For Ponds contains specific benificial microbs and enzymes that are effective at reducing sludge, uneaten fish food, fish waste, and excess nutrients that cause poor water quality and clarity. By adding this Beneficial Bacteria periodically to a water feature is one of the most important things you can do to maintain clear, healthy water. Add this beneficial bacteria in the spring to start your system, in the summer, spike it periodically to keep the water clear. Also available in fast acting liquid formulations as well. NOTE: AquaScape Aquaclearer Extreme Dry formulation has been discontinued as of the fall of 2009 and replaced by a new formulation of 8 pure strains of concentrated including PSB bacteria and enzymes. This combination of natural cleaners helps to maintain a strong biological balance in your pond. It also has a new & less confusing name, Aquascape Beneficial Bacteria for Ponds and it maintains a strong biological balance providing clean, clear and healthy water conditions. Safe for fish, plants or animals that may drink pond water. Contains Photo Synthetic Bacteria (PSB) 1 billion CFU per gram potency The 1.1lb (500 gram) container treats up to 104,000 gal./393,567 liters – 1 scoop (now a teaspoon) included treats up to 1,000 gal./3,784 liters TJB-INC will be sending you the new updated product, Beneficial Bacteria For Ponds – Dry if you order this item.