LIFEGARD® Aquatics Live Nitrifying Bacteria prevents new tank syndrome by instantly working to establish a bio-filter in newly set-up Ponds and Aquariums. Use LIFEGARD® Aquatics Live Nitrifying Bacteria to control ammonia and nitrite levels. Good for 6 months at room temperature, 1 year at 50°F. Best to keep refrigerated for longest shelf life. Live Nitrifying Bacteria - Allows Immediate Addition of Fish Contains Unique Live Nitrifying Bacteria. Seeds and Enhances the Biological Filter. New Technology makes our Live Nitrifying Bacteria Free of Odors. Clear and Natural - No Artificial Dyes added. Eliminates Ammonia and Nitrite, Naturally. Keeps Water Clean. Helps to Maintain Healthy fish. Promotes Natural Cycling. Safe for all fish and plants including household pets that may drink the water. Concentrated Formula treats 2 times more water.