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Code expires 5/28/13
Fritz Zyme #7 Freshwater Nitrifying Bacteriacontains live, active. non-pathogenic, non-toxic Nitrosomonas and Nitrobacter nitrifying bacteria. Proven to be the best product available for ammonia & nitrite reduction. Fritz Zyme #7, begins rapidly converting ammonia & nitrite to non-toxic nitrate when added. Nitrifying Bacteria count (minimum) 2,000,000 per ounce.
Always add FRITZZYME #7