API Marine Quick Start allows instant addition of fish to a new marine aquarium. The Quick Start contains live, nitrifying bacteria to quickly consume ammonia and nitrite by immediately establishing the biological filter to help prevent fish loss. Also helps maintain an active biological filter in an established aquarium. Reef safe. Does not require refrigeration. Features: Allows you to instantly add new fish Used For: Aquariums Health Consideration: Helps prevent fish loss Weight: 16 oz Caution: Allows instant addition of fish to a new aquarium when all necessary conditions are met, including proper pH and water temperature, effective filtration and the addition of a water conditioner to remove chlorine or chloramines. Keep from freezing. Store in a cool place. Keep out of reach of children. Directions: Use when starting a new aquarium, adding new fish, live rock or corals, changing water, changing filter media, after medicating or whenever ammonia or nitrite are detected. Shake well. Use dosing cap on bottle. Add 20 ml per 10 U.S. gallons of aquarium water.