MICROBE-LIFT NITEH16 Nite-Out II Aquarium and Fish Tank Cleaner for Rapid Ammonia and Nitrite Reduction, Freshwater and Saltwater, 16 OuncesIMPROVES WATER QUALITY: Microbe Lift Nite Out II is a special blend that specifically decreases ammonia and nitrites in aquariums and fish tanks; this solution is effective in freshwater and saltwater REDUCE AMMONIA AND NITRITES: Nite Out II will establish and maintain nitrification in aquarium waters, eliminating the problematic effects of ammonia; Nitrosomonas oxidizes ammonia to nitrite and Nitrobacter oxidizes nitrite to nitrate REDUCE FISH LOSS: