API Quick Start is a powerful and fast-acting bacterial supplement designed to establish and maintain a healthy biological filter in freshwater and saltwater aquariums. Featuring a blend of live nitrifying bacteria, it rapidly converts ammonia and nitrite into less harmful nitrate, helping prevent toxic spikes and supporting a balanced aquatic environment. Ideal for new tank setups, water changes, or after filter cleaning, Quick Start promotes a stable nitrogen cycle, reduces stress in fish and invertebrates, and enhances overall aquarium health. Its easy-to-use liquid formulation provides reliable and consistent results for thriving, vibrant aquatic ecosystems.