Seachem Stability Seachem Stability® is a powerful aquarium treatment designed to rapidly and safely establish the biological filter in both freshwater and marine aquariums. By introducing a synergistic blend of aerobic, anaerobic, and facultative bacteria, Stability® prevents "new tank syndrome" – the leading cause of fish loss in new aquariums. Unlike many unstable bacterial products, Seachem Stability® is formulated to remain effective across a wide range of water conditions, ensuring continuous breakdown of organic waste, ammonia, nitrite, and nitrate. Completely harmless to fish, plants, and other aquatic life, Stability® is safe to use regularly and poses no risk of overdose. Key Features & Benefits: Prevents New Tank Syndrome: Establishes a healthy biofilter quickly and safely. Powerful Bacterial Blend: Contains aerobic, anaerobic, and facultative bacteria to break down waste. Safe & Reliable: Non-sulfur fixing – no toxic hydrogen sulfide production. Stable Across Conditions: Works in a wide range of temperatures, pH, and organic loads. Harmless to All Aquatic Life: Safe for fish, invertebrates, and aquatic plants. Long Shelf Life: Stays effective for up to 6 years. Versatile Use: Ideal for new setups, water changes, medication treatments, and introducing new fish. Usage Instructions: Shake well before use and turn off UV/ozone. New tanks: Use 5mL per 40L on day 1, then 5mL per 80L daily for 7 days. Maintenance: Use 5mL per 80L monthly, at water changes, when medicating, or when adding new fish.