Seachem Stability® will rapidly and safely establish the aquarium biofilter in freshwater and marine systems, thereby preventing the #1 cause of fish death: “new tank syndrome”. Stability® is formulated specifically for the aquarium and contains a harmonious blend of aerobic, anaerobic, and facultative bacteria. These help the breakdown of waste organics, ammonia, nitrite, and nitrate. The bacteria that are used by Stability® are non-sulfur fixing and will not produce toxic hydrogen sulfide. This product is completely harmless to all aquatic organisms as well as aquatic plants, thus there is no danger of over use.  It is the result of nearly a decade of research and development and represents the current state of the art in natural biological management. The bacteria used in competing products are usually unstable. The conditions necessary for their growth and development fall into a very narrow range of temperatures, pH, organic loads, etc. When any of these parameters are not strictly within the proper range, the bacterial culture quickly crashes and dies. Stability® does not contain any of those bacteria. Available in various sizes at Rebel Pets. Directions:  Shake well before use. Turn off UV/ozone. Use 1 capful (5 mL) for each 40 L (10 US gallons) on the first day with a new aquarium. Then use 1 capful for each 80 L (20 US gallons) daily for 7 days. Fish and other aquatic species may be introduced at any time as long as dosage is maintained for 7 days. For the best biofilter performance use 1 capful for each 80 L (20 US gallons) once a month or with each water change and whenever introducing new fish or whenever medicating an aquarium. Product shelf life is 4 years from date of manufacture, see expiration date at the bottom. Stability® should ideally be used together with biological filtration such as Seachem Matrix™. For emergency ammonia control, use Seachem AmGuard™.