Seachem Stability - 500ml Seachem Stability - 500ml is a biological aquarium supplement for establishing and supporting the biofilter in freshwater, marine, and planted aquariums. Seachem Stability for Aquarium Biofilter Support Stability helps seed and maintain beneficial bacteria populations that process waste organics, ammonia, nitrite, and nitrate. It is designed for new aquarium setups and for ongoing support when the biological filter is disturbed by maintenance, medication, or new livestock additions. Beneficial Bacteria Benefits for Aquarium Cycling Helps establish the aquarium biofilter in new freshwater and marine systems. Supports biological filtration after cleaning, water changes, or medication use. Contains aerobic, anaerobic, and facultative bacteria for waste breakdown. Can be used when introducing new fish to support biofilter demand. Safe for aquatic plants and aquarium livestock when used as directed. Seachem Stability Bacteria Supplement Details Product type: Beneficial bacteria aquarium supplement Primary use: Aquarium cycling and biofilter maintenance Suitable systems: Freshwater, marine, and planted aquariums Initial dose: 5 ml per 40 L (10 US gallons) Ongoing dose: 5 ml per 80 L (20 US gallons) Package size: 500 ml Directions for Seachem Stability Shake well before use and turn off UV sterilizers or ozone during dosing. For new aquariums, dose 1 capful or 5 ml for every 40 L (10 US gallons) on day one. Continue with 1 capful or 5 ml for every 80 L (20 US gallons) daily for 7 days. For established aquariums, use 1 capful for every 80 L once a month, with water changes, when adding new fish, or after medicating. What's Included 1 x Seachem Stability - 500 ml