The Seachem Stability Water Conditioner for Fish Tanks quickly and safely establishes the aquarium biofilter in freshwater and marine systems, preventing the number one cause of fish death, "new tank syndrome." It represents the current state of the art in natural biological management and is the result of nearly a decade of research and development. Stability is an aquarium bacteria that contains a synergistic blend of aerobic, anaerobic, and facultative bacteria that aid in the breakdown of waste organics, ammonia, nitrite, and nitrate. Stability bacteria do not fix sulfur and do not emit toxic hydrogen sulfide. Because it is completely safe for all aquatic organisms and plants, there is no danger of overuse. Competing products make use of bacteria that are naturally unstable. Temperatures, pH, organic loads, and other growth and development factors all fall within a very narrow range. When any of these parameters are out of range, the bacterial culture quickly dies. Stability isn't limited in this way. The Stability's bacteria strains require a wide range of environmental conditions to grow. Stability simply becomes more effective as other bacteria die off (usually due to high organic loads caused by an organism's undetected death).