Formulated for Rapid Ammonia & Nitrite Reduction, MICROBE-LIFT/Nite-Out II quickly eliminates dangerous ammonia toxicity in both fresh & salt water aquariums. This liquid nitrifying bacteria contains select strains of Nitrosomonas, Nitrospira & Nitrobacter which convert ammonia to nitrite & nitrite to nitrate. The specialized microbes in Nite-Out II are autotrophic, meaning they can use CO2 as their sole carbon source, & reproduce slowly, typically dividing every 8-16 hours. It's the perfect product for a healthier aquatic environment!