Fritz Aquatics FritzZyme® 9 Saltwater Nitrifying Bacteria 946ml / 32oz

The Original Live Nitrifying Bacteria for Saltwater & Brackish Aquariums

Fritz Aquatics FritzZyme® 9 is a live nitrifying bacteria supplement designed for saltwater and brackish systems. It rapidly eliminates toxic ammonia and nitrite, protecting your fish and livestock during the crucial cycling process. Unlike spore-based or heterotrophic products, FritzZyme® 9 contains true saltwater-specific nitrifying bacteria, proven to work for over 30 years in aquaculture, zoos, and public aquariums.

Buffered for long-term stability, FritzZyme® 9 requires no refrigeration and has a 1-year shelf life. It is safe for use with fish, corals, invertebrates, and live plants, and can be dosed directly into aquariums without clouding or altering water quality.

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Key Benefits of FritzZyme® 9 Saltwater

• Rapidly seeds biofilters to remove toxic ammonia and nitrite

• Greatly reduces aquarium cycle time for faster livestock introduction

• Safe for all saltwater fish, corals, and invertebrates

• Excellent for stabilizing tanks after water changes, maintenance, or medication

• Buffered for long-term stability – no refrigeration required

• Trusted worldwide for over 30 years by professionals and aquaculture facilities

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Directions & Dosage

• New Systems: 119 ml (½ cup) per 19 L (5 US gal)

• Established Systems: 60 ml (¼ cup) per 19 L (5 US gal)

• For heavy bioload or large systems, the new system dose can be safely increased up to 10x.

Usage Guidelines:

• Introduce livestock or an ammonia source (e.g. Fritz Fishless Fuel) to sustain bacteria.

• Discontinue protein skimmers and UV sterilizers for at least 5 days.

• Maintain adequate aeration and water flow.

• Safe to overdose – harmless to fish, corals, and invertebrates.

• Store in a cool, dark place. Do not freeze or overheat.

Ideal Parameters for FritzZyme® 9:

• Temperature: 25–30 °C

• pH: 7.3–8.0

• Salinity: 1.011–1.030 sg

• Alkalinity: ≥4.5 dKH

• Phosphate: >0 ppm

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Why Choose FritzZyme® 9?

Fritz Aquatics was the first company to commercially produce nitrifying bacteria for aquariums and has remained an industry leader for over 30 years. With proven strains and unmatched reliability, FritzZyme® 9 ensures stable, healthy saltwater and brackish systems while protecting fish and corals from ammonia and nitrite stress.

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Product Details

• Brand: Fritz Aquatics

• Product: FritzZyme® 9 Saltwater Nitrifying Bacteria

• Size: 946ml / 32oz

• UPC: 080531040343

• Form: Liquid – Live saltwater nitrifying bacteria

• Safe For: All saltwater species, corals, and invertebrates