FritzZyme 7 Freshwater Aquarium Bacteria
About this product
FritzZyme 7 Freshwater Nitrifying Bacteria
Establish a healthier, more stable aquarium with live beneficial bacteria.
A thriving aquarium starts with a healthy biological filtration system. FritzZyme 7 contains live, freshwater-specific nitrifying bacteria that help establish and maintain the natural nitrogen cycle, converting harmful ammonia into nitrite and subsequently into less harmful nitrate.
Designed for new and established freshwater aquariums, FritzZyme 7 helps accelerate aquarium cycling, replenish beneficial bacteria and support a stable aquatic environment for fish, shrimp, plants and other freshwater inhabitants.
Whether you’re starting a new aquascape, performing major filter maintenance or introducing additional livestock, FritzZyme 7 provides the beneficial bacteria needed to support your aquarium’s biological filtration.
Key Benefits
- Accelerates Aquarium Cycling – Introduces live nitrifying bacteria to help establish biological filtration in new aquariums.
- Supports Ammonia & Nitrite Reduction – Helps process potentially harmful nitrogen compounds through natural biological filtration.
- Establishes Healthy Biofilters – Seeds and supports the beneficial bacterial colonies responsible for maintaining aquarium water quality.
- Ideal After Aquarium Maintenance – Helps replenish bacteria following filter cleaning, filter media replacement or disruptions to biological filtration.
- Supports New Livestock Introductions – Reinforces biological filtration when the aquarium’s bioload increases.
- Safe for Planted Aquariums – Suitable for freshwater fish, aquatic plants, shrimp, snails and other invertebrates when used as directed.
- Live Bacteria Without Refrigeration – Stabilised for storage without refrigeration under appropriate conditions.
When Should You Use FritzZyme 7?
FritzZyme 7 is ideal for:
- Setting up a new freshwater aquarium or aquascape
- Establishing biological filtration in new filters
- Replacing or thoroughly cleaning filter media
- Introducing new fish or increasing aquarium stocking levels
- Supporting biological filtration following medication
- Recovering from ammonia or nitrite spikes
- Restoring bacterial populations after disruptions to the nitrogen cycle
Available Sizes
473ml / 16 US fl oz
A convenient option for smaller freshwater aquariums, new aquascapes and routine biological filter support.
- Bottle volume: 473ml
- Treats up to approximately 606 litres in established systems
946ml / 32 US fl oz
A larger, more economical option for customers maintaining multiple aquariums, larger displays or systems requiring more frequent biological filtration support.
- Bottle volume: 946ml
- Treats up to approximately 1,212 litres in established systems
Treatment capacities are based on the manufacturer’s current established-aquarium dosage. New aquariums require a higher initial dose.
Directions & Dosage
New Aquariums
Add 119ml per 38 litres of aquarium water when establishing a new biological filtration system.
Established Aquariums
Add 30ml per 38 litres of aquarium water when biological filtration requires additional support.
For aquariums with a heavy bioload, refer to the manufacturer’s instructions for appropriate increased dosing.
Important Instructions
- Always remove chlorine and chloramine from tap water before adding beneficial bacteria.
- Maintain adequate water circulation and aeration.
- Disable UV sterilisers for at least five days after application.
- Ensure a suitable ammonia source is available when establishing biological filtration.
- Store in a cool, dark location away from excessive heat or freezing.
- Use before the expiration date printed on the bottle.
- Follow the dosage instructions on your specific product packaging.
Product Specifications
Brand: Fritz Aquatics
Product: FritzZyme 7 Freshwater
Product Type: Live Nitrifying Bacteria
Available Sizes: 473ml / 16 US fl oz and 946ml / 32 US fl oz
Aquarium Compatibility: Freshwater and low-salinity brackish systems within manufacturer specifications
Freshwater fish, aquatic plants, shrimp, snails and other freshwater invertebrates
Primary Function: Biological filtration establishment and support
Storage: No refrigeration required; keep cool and protect from temperature extremes
School of Scape Tip
Good bacteria are the foundation of every successful aquascape.
When establishing a new aquarium, introducing beneficial bacteria is only one part of the cycling process. Monitor ammonia and nitrite levels regularly and ensure your filter provides adequate biological filtration.
For established aquariums, FritzZyme 7 can be particularly useful after significant filter maintenance, medication or changes in stocking levels.
Remember that bacterial supplements help establish and support the nitrogen cycle, but they do not replace regular water testing, appropriate stocking and good aquarium husbandry.
Build a healthier aquarium from the beginning with FritzZyme 7.
Delivery and returns
Free delivery over $100 in WA and $150 elsewhere in Australia. Free pickup from our Kenwick store, Tue to Sat, 12pm to 6pm.