This liquid will rapidly and safely establish the aquarium biofilter in fresh and salt water systems, thereby preventing the 1 cause of fish death: "new tanks syndrome". It is formulated specifically for the aquarium and contains a synergistic blend of aerobic, anaerobic, and facultative bacteria which facilitate the breakdown of waste organics, ammonia and nitate. The bacteria employed are non-sulfur fixing and will not produce toxic hydrogen sulfide. This product is completely harmless to all aquatic organisms as wellas aquatic plants, thus there is no danger of over use.Treats 45 gallons for new aquariums, treats 400 gallons for established aquariums.

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