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.

• Professional formula for use in all freshwater systems; safe for use with plants, snails and discus
• Removes ammonia and nitrites the safe, permanent and natural way
• Does not require refrigeration
• 16 oz treats 80 gallons

Always add Fritz Zyme #7:

• To new tanks
• When adding new livestock
• After any rigourous cleaning
• Changing gravel
• After changing filter cartridges
• After medicating
• Whenever ammonia/nitrite imbalances occur

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.