Fritz FritzZyme 7 Freshwater Nitrifying Bacteria

The ORIGINAL LIVE Nitrifying Bacteria
Rapidly Eliminates Toxic Ammonia and Nitrite
Allows Safe Immediate Introduction of Livestock
Prevents “New Tank Syndrome”
Establishes and Maintains a Healthy Biofilter
Prevents Fish Loss – FritzZyme Saves Lives!
A Safe, Natural Approach to Water Treatment

FritzZyme 7 contains specific strains of live, freshwater nitrifying bacteria proven to reduce fish loss caused by spikes in ammonia and nitrite. In new aquariums, harmful levels can build within days, while beneficial bacteria may take weeks to establish naturally. This formula provides the proper balance of bacteria to rapidly seed biofilters, greatly shortening the cycle time and helping you safely add livestock sooner.

Fritz Industries pioneered commercial-scale cultivation of nitrifying bacteria and has maintained continuous production for over 30 years. Use in new or established systems whenever the biofilter needs fortification—after water changes, aggressive cleaning, adding new livestock, medicating, or changing filter media. Contains live freshwater-specific species of nitrifying bacteria.

Directions:
For new systems, dose 4 oz (119 ml / ½ cup) per 10 US gallons (38 L). For systems with heavy livestock, the new system dosage may be safely increased up to 10x.
For established systems, use 2 oz (60 ml / ¼ cup) per 10 US gallons (38 L).

Storage: Live product. Do not freeze or overheat. Store in a cool, dark place. Use before expiration date.

Why it works: Rapid biofilter seeding helps prevent “new tank syndrome,” stabilizes water quality, and supports a resilient nitrogen cycle in freshwater aquariums.

Ideal for quick cycling, routine maintenance, and recovery after disruptions—supporting clear, stable, and fish-safe water.