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.

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

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

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.

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