Adding beneficial bacteria is one of the most important things you can do for your pond. 

Liquid Beneficial Bacteria is scientifically blended and tested to ensure maximum results in water gardens, koi ponds and lakes. Beneficial Bacteria contains pro-biotic microbes,enzymes, and electrolytes that work in symphony to reduce sludge, uneaten fish food, fish waste, and other excess nutrients that cause poor water quality and clarity.

Directions:
Use the graduated measuring chart on the side of the bottle adding 1 ounce/30 ml for every 1,000 gallons/3,800 L of pond water. Apply product in the area of the pond with the best circulation. In new ponds, or spring time start up, apply daily for 2 weeks. Continue treating once a week as part of ongoing maintenance.