---
product_id: 8451682
title: "FritzZyme 9 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Saltwater Fish (1-Gallon)"
brand: "fritz aquatics"
price: "€ 118.90"
currency: EUR
in_stock: true
reviews_count: 11
category: "Fritz Aquatics"
url: https://www.desertcart.ie/products/8451682-fritzzyme-9-live-nitrifying-bacteria-naturally-removes-amonia-and-nitrite
store_origin: IE
region: Ireland
---

# Saltwater-specific live nitrifying bacteria 1-gallon easy-dose, no refrigeration needed Rapid biofilter establishment in days FritzZyme 9 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Saltwater Fish (1-Gallon)

**Brand:** fritz aquatics
**Price:** € 118.90
**Availability:** ✅ In Stock

## Summary

> 🐟 Save your reef, save your vibe — FritzZyme 9 keeps your saltwater sanctuary thriving!

## Quick Answers

- **What is this?** FritzZyme 9 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Saltwater Fish (1-Gallon) by fritz aquatics
- **How much does it cost?** € 118.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/8451682-fritzzyme-9-live-nitrifying-bacteria-naturally-removes-amonia-and-nitrite)

## Best For

- fritz aquatics enthusiasts

## Why This Product

- Trusted fritz aquatics brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile & Resilient:** Perfect for new setups or fortifying stressed biofilters after cleaning, livestock changes, or filtration upgrades.
- • **Trusted Industry Pioneer:** Backed by 30+ years of Fritz Aquatics expertise, ensuring reliable, proven performance.
- • **Fast-Track Livestock Addition:** Cut natural cycle time dramatically—add fish safely within days, not weeks.
- • **Effortless Aquarium Maintenance:** No refrigeration & 1-year shelf life means always-ready bacteria support after water changes or meds.
- • **Turbocharge Your Tank's Biofilter:** Slash ammonia & nitrite spikes with saltwater-specialized bacteria for a thriving aquatic ecosystem.

## Overview

FritzZyme 9 is a premium, live nitrifying bacteria solution formulated specifically for saltwater aquariums. It rapidly establishes and fortifies biofilters by eliminating toxic ammonia and nitrite, enabling safe and immediate addition of fish. With no refrigeration required and a 1-year shelf life, it’s a convenient, trusted choice backed by over 30 years of Fritz Aquatics’ pioneering expertise in aquatic care.

## Description

FritzZyme 9 contains saltwater-specific strains of live nitrifying bacteria proven to reduce fish loss due to toxic levels of ammonia and nitrite. Nitrifying bacteria can take weeks to naturally establish colonies in new aquariums while ammonia and nitrite can reach lethal levels in only a few days. FritzZyme 9 provides the proper balance of bacteria proven to rapidly seed biofilters, greatly reducing the natural cycle time allowing for safe, immediate addition of livestock. Fritz Industries was the first company to pioneer commercial-scale cultivation of nitrifying bacteria and has remained one of only a few in the world with continuous production for over 30 years. FritzZyme 9 may be added to new tanks or established systems any time the biofilter needs fortification including: after water changes, aggressive cleaning, adding new livestock, medicating or changing filter media. FritzZyme 9 contains live saltwater-specific species of nitrifying bacteria.

Review: Fritzzyme saved my reef :-) - This definitely works. Fritzzyme saved me during a horrible situation.. I've been stalling upgrading my filtration in my reef tank from an old canister filter to sump (price... yikes) and after putting off the monthly cleaning of debris from the canister filter and putting off water changes for 6 months my system began to cascade into a nosedive. Everything in the tank was releasing a slime and fish started to die.. fish I've had for over 6 years - longer than I've had my dog. I did water changes, but I think the bacteria in the live rock had died or was dying, nothing was stopping it. I ordered this stuff with 1 day shipping and arrived the next morning. I disconnected the canister and just ran the power heads full blast to really move the water and dosed per directions. By that evening the water was clearing up and the smell of death was dissipating from the tank. In 48 hours the polyps began to open and with 2 more water changes nitrates were close to zero. Needless to say, I did get a sump installed by the end of the week and the old Aquatop was on craigslist. I dosed with the Fritzzyme once a week for the next 3 weeks to start up the sump - hoping to "seed" the deep sand bed in the sump even though I used live sand and established live rock rubble. It's been just over a month and water quality is perfect. I should say I also used NO3:PO4-X as well to give the new bacteria the carbon it needs to establish just in case anyone reading this is having the same nightmare. I swore if the tank went down I was done with the whole saltwater thing, praying that it would reverse course. I would credit Fritzzyme for saving my tank. FYI... I didn't read the dosage before I purchased, so I got lucky when I ordered the gallon size. The dosage for established tanks (re-establishing beneficial bacteria and adding new livestock) is 2oz per 5 gallons, so you go through a lot. I almost gave 4 stars because I can't see why it can't be more concentrated to be smaller doses... but after my near-miss and comeback thanks to Fritzzyme (and I'm not versed in the concentrating of bacteria) they deserve 5 stars. Just be sure you order enough.
Review: I added my total stock of fish at to same time to a 29 gallon tank with ease. - I added 13 Pygmy Cory, 9 green neon tetra, 9 dwarf neon rainbow, and a dwarf honey gourami all on the same day to my fully cycled planted 29 gallon tank. Not one fatality after 3 months. Best product for a new tank set up when adding fish. I have never lost a fish since using this product. I use it regularly and always when setting up a new aquarium. It’s a miracle.

## Features

- 🐟 Specialized Saltwater Nitrifying Bacteria: FritzZyme 9 is formulated with live, saltwater-specific strains of nitrifying bacteria, expertly designed to rapidly eliminate toxic levels of ammonia and nitrite in saltwater aquariums, thereby significantly reducing fish loss and promoting a healthy aquatic environment.
- 🌊 Accelerates Biofilter Establishment: This product effectively seeds biofilters in new and existing saltwater systems, greatly shortening the natural cycle time. This allows for the safe and quick addition of livestock, ensuring minimal downtime and maximum enjoyment of your aquarium.
- 🙌 Convenient and User-Friendly: With no refrigeration required and a one-year shelf life, FritzZyme 9 offers an easy-to-use solution for maintaining saltwater aquariums. It’s perfect for use after routine maintenance, water changes, adding new livestock, or during medication phases.
- ⭐ Proven Track Record in Aquatic Care: Backed by over 30 years of success, Fritz Aquatics is a pioneer and industry leader in producing high-quality, live nitrifying bacteria. Their expertise ensures that FritzZyme 9 is a reliable and effective product for professional and home aquariums.
- ❤️ Versatile Application for Biofilter Support: FritzZyme 9 can be added to new tanks or used to fortify existing systems, especially after significant changes or disturbances. It is a vital tool in maintaining the balance and health of your saltwater aquarium's ecosystem.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002DGK9A |
| ASIN  | B0002DGK9A |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #33,549 in Pet Supplies ( See Top 100 in Pet Supplies ) #302 in Aquarium Water Treatments |
| Brand Name | Fritz Aquatics |
| Color | Clear |
| Country of Origin | United States |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,253) |
| Date First Available | August 29, 2012 |
| Date First Available  | August 29, 2012 |
| Directions | For a new system, dose 4 oz (119 ml / ½ cup) per 5 US gallons (19 L). For established systems, use 2 oz (60 ml / ¼ cup) per 5 US gallons (19 L). |
| Included Components | Fritz Aquatics 80206 FritzZyme 9 Nitrifying Bacteria for Salt Water Aquariums, 1-Gallon |
| Item Dimensions LxWxH | 0.02 x 0.02 x 0.02 inches |
| Item Package Dimensions L x W x H | 11.81 x 6.02 x 5.94 inches |
| Item Weight | 0.3 Ounces |
| Item model number | 80206 |
| Item model number  | 80206 |
| Manufacturer | Fritz Aquatics |
| Manufacturer  | Fritz Aquatics |
| Material | Cotton |
| Model Name | Fritz Aquatics 80206 FritzZyme 9 Nitrifying Bacteria for Salt Water Aquariums, 1-Gallon |
| Number of Items | 1 |
| Product Dimensions  | 0.02 x 0.02 x 0.02 inches; 0.3 ounces |
| Size | 1 gal |
| Specific Uses for Product | Coat |
| Target Audience Keyword | algae-eaters, betta-fish, bottom-feeder-fish, cichlid-fish, fish, goldfish, invertebrate-fish, mollusks, octopuses, rays, sharks, snails |
| Warranty Description | See Manufacturers Website |

## Product Details

- **Brand:** Fritz Aquatics
- **Item Form:** Liquid
- **Item Weight:** 0.3 Ounces
- **Liquid Volume:** 128 Fluid Ounces
- **Manufacturer:** Fritz Aquatics

## Images

![FritzZyme 9 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Saltwater Fish (1-Gallon) - Image 1](https://m.media-amazon.com/images/I/71dbTAEGTIL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fritzzyme saved my reef :-)
*by T***A on September 22, 2017*

This definitely works. Fritzzyme saved me during a horrible situation.. I've been stalling upgrading my filtration in my reef tank from an old canister filter to sump (price... yikes) and after putting off the monthly cleaning of debris from the canister filter and putting off water changes for 6 months my system began to cascade into a nosedive. Everything in the tank was releasing a slime and fish started to die.. fish I've had for over 6 years - longer than I've had my dog. I did water changes, but I think the bacteria in the live rock had died or was dying, nothing was stopping it. I ordered this stuff with 1 day shipping and arrived the next morning. I disconnected the canister and just ran the power heads full blast to really move the water and dosed per directions. By that evening the water was clearing up and the smell of death was dissipating from the tank. In 48 hours the polyps began to open and with 2 more water changes nitrates were close to zero. Needless to say, I did get a sump installed by the end of the week and the old Aquatop was on craigslist. I dosed with the Fritzzyme once a week for the next 3 weeks to start up the sump - hoping to "seed" the deep sand bed in the sump even though I used live sand and established live rock rubble. It's been just over a month and water quality is perfect. I should say I also used NO3:PO4-X as well to give the new bacteria the carbon it needs to establish just in case anyone reading this is having the same nightmare. I swore if the tank went down I was done with the whole saltwater thing, praying that it would reverse course. I would credit Fritzzyme for saving my tank. FYI... I didn't read the dosage before I purchased, so I got lucky when I ordered the gallon size. The dosage for established tanks (re-establishing beneficial bacteria and adding new livestock) is 2oz per 5 gallons, so you go through a lot. I almost gave 4 stars because I can't see why it can't be more concentrated to be smaller doses... but after my near-miss and comeback thanks to Fritzzyme (and I'm not versed in the concentrating of bacteria) they deserve 5 stars. Just be sure you order enough.

### ⭐⭐⭐⭐⭐ I added my total stock of fish at to same time to a 29 gallon tank with ease.
*by S***S on August 6, 2025*

I added 13 Pygmy Cory, 9 green neon tetra, 9 dwarf neon rainbow, and a dwarf honey gourami all on the same day to my fully cycled planted 29 gallon tank. Not one fatality after 3 months. Best product for a new tank set up when adding fish. I have never lost a fish since using this product. I use it regularly and always when setting up a new aquarium. It’s a miracle.

### ⭐⭐⭐⭐⭐ It WORKS
*by C***. on October 5, 2020*

I used Fritz Aquatics FritzZyme 9 Nitrifying Bacteria and it worked great here's the story I have a J BJ 29 livestock one clown fish, one fire fish, one blue green chroma's, and a very small flame back and Angel 1in a fire shrimp blue hermit crab and some snails the tank has been extremely peaceful no fighting whatsoever. Then one day the flame back became a problem he's only 1 inch and after about six months. He decided every rock in the aquarium was his. Started aggressively protecting it would pick the shrimp up and drag him off the rocks. He had to go I had a 10 gallon set up with a pair of clown fish I put a divider in flame Angel on one side clown fish on the other. Had to set up a tank fast I looked on Facebook marketplace and found a 30 gallon not far from the house for $10 still had stickers on it Set it up with what I had laying around the house a very old hang on back filter and to sponge bubble filters. Made 20 gallons of saltwater. Filled the tank and ordered Fritz nine on Amazon. It arrived at 9 o'clock AM the next day 32 ounce bottle. I I poured it in let it circulate for about an hour . Put the fish in some old salt buckets . And dumped the 10 gallon tank into the 30 gallon tank sand and to large conch shells acclimated the fish and dumped him in put some old Constantine tiles from a bathroom rebuild to make some hiding places . And everything has been living happily ever after This stuff is great not only for its intended use of starting a new tank or boosting the bacterial load . But it's ability to be used in an emergency situation is amazing . It literally saved a a couple of hundred dollars worth of fish . Thanks Fritz

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-22*