Instant Aquarium Cycling with Live Beneficial BacteriaAPI Quick Start contains live nitrifying bacteria that immediately establishes the biological filter in new aquariums. This 8oz bottle eliminates the need for lengthy cycling periods and reduces fish stress.Instant Cycling Benefits: Live Bacteria: Contains millions of live nitrifying bacteria Instant Results: Immediately starts the nitrogen cycle Reduces Stress: Eliminates toxic ammonia and nitrite buildup Safe for Fish: Add fish immediately after treatment 8oz Bottle: Treats up to 960 gallons of water Technical Specifications:Volume: 8 fluid ouncesTreatment Capacity: Up to 960 gallonsBacteria Types: Nitrosomonas and NitrobacterApplication: Freshwater and saltwater aquariumsStorage: Refrigerate after openingPerfect Applications:New tank setup, after medication treatments, filter cleaning, adding new fish, and any time beneficial bacteria may be depleted.Professional aquarists' choice for instant cycling. Eliminates the 4-6 week cycling wait time.