DrTim’s Aquatics Reef Safe One & Only Live Nitrifying Bacteria  – Eliminate New Tank Syndrome for New Fish Tanks, Aquariums, & Water Filtering & Treatment - Treats 240 gal - 16ozOne & Only Live Nitrifying Bacteria Reef Safe eliminates New Tank Syndrome for fish tanks aquariums Effective solution instantly creates bio filter to naturally remove toxic ammonia and nitrite in water Best results occur when setting up new tank, after water changes, cleaning filter, adding new fish and after ailment treatments Adds nitrifying bacteria that convert fish waste in fish tanks and aquariums to a non toxic form Helps control ammonia &