Seachem Stability is formulated specifically for use in aquariums, containing a blend of highly beneficial bacteria which effectively breaks down waste organics, ammonia, nitrite and nitrate. This makes it an ideal product to use when starting new tanks, as it rapidly establishes the biofilter, preventing “New Tank Syndrome”. It can also be used when adding new livestock, aiding in the prevention of ammonia/nitrite spikes. It is completely harmless to all aquatic organisms, including plants, so there is no danger of over use. 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 optimum 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.