Fritz Zyme #7 Freshwater Nitrifying Bacteria contains live, active. non-pathogenic, non-toxic Nitrosomonas and Nitrobacter nitrifying bacteria. Proven to be the best product available for ammonia and nitrite reduction, Fritz Zyme #7 begins rapidly converting ammonia and nitrite to non-toxic nitrate when added.
Always add Fritz Zyme #7:
Dosage: Add 1/2 cup (4 oz) per 10 gallons to jump-start new systems or reduce ammonia/nitrite spike. Nitrifying Bacteria count (minimum): 2,000,000 per ounce.
