FritzZyme 7 Live Nitrifying Bacteria – Freshwater Aquarium (32-Ounce | 2-Pack) | Fritz Aquatics

Overview

FritzZyme 7 Freshwater is a live culture of nitrifying bacteria designed to support quick, steady cycling in freshwater and brackish tanks. By introducing species-specific strains, it aims to help reduce ammonia and nitrite levels, creating a more stable environment for fish and plants during routine maintenance, new setups, or after disturbances.

This 32-ounce bottle is buffered for long-term stability, so refrigeration isn’t required. With a one-year shelf life, FritzZyme 7 offers convenient, on-hand coverage for ongoing aquarium care without extra storage concerns.

Why choose FritzZyme 7?

• Live nitrifying bacteria for rapid cycling, potentially reducing harmful ammonia and nitrite.
• Versatile for freshwater and brackish systems, useful after water changes, filter media swaps, or adding new livestock.
• No refrigeration needed and a one-year shelf life thanks to stable buffering.
• Backed by Fritz Aquatics, a brand with over 30 years of experience in nitrifying bacteria products.
• Beyond cycling, it may help reinforce the biofilter after disturbances to support ongoing tank stability.

What to expect in your aquarium

• Water chemistry improvements may occur as beneficial bacteria establish, with results varying by tank size and bioload.
• Easy dosing and handling—follow label instructions and add directly to the aquarium or filter chamber as part of your routine.

Usage tips

Pair FritzZyme 7 with regular monitoring of ammonia and nitrite levels. Consider integrating into a planned maintenance schedule to support ongoing water quality and tank health without promising guarantees.