DrTim's Aquatics Reef One and Only Nitrifying Bacteria 8 oz.

Dr. Tim's Aquatics One & Only Live Nitrifying Bacteria for Reef Aquariums removes toxic ammonia and nitrite, instantly working to prevent new tank syndrome by establishing a biological filter in your newly set up aquarium. Use One & Only when setting up a new tank, after a disease treatment, or during water changes. This powerful solution contains no sulfur or other offensive odors.