--- product_id: 3269493 title: "Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (16-Ounce)" brand: "fritz aquatics" price: "$42.77" currency: USD in_stock: true reviews_count: 13 category: "Fritz Aquatics" url: https://www.desertcart.us/products/3269493-fritz-aquatics-fritzzyme-7-live-nitrifying-bacteria-naturally-removes-amonia store_origin: US region: United States of America --- # Works in fresh & brackish water systems Live nitrifying bacteria for rapid ammonia & nitrite removal One-year shelf life, no refrigeration needed Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (16-Ounce) **Brand:** fritz aquatics **Price:** $42.77 **Availability:** ✅ In Stock ## Summary > 🐠 Cycle faster, fish safer — the pro’s secret to thriving tanks! ## Quick Answers - **What is this?** Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (16-Ounce) by fritz aquatics - **How much does it cost?** $42.77 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/3269493-fritz-aquatics-fritzzyme-7-live-nitrifying-bacteria-naturally-removes-amonia) ## 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 - • **Rapid Biofilter Boost:** Instantly jumpstart your aquarium’s nitrogen cycle and protect your fish from toxic ammonia and nitrite spikes. - • **Long-Lasting Stability:** Buffered formula with a full year shelf life—no fridge required, so you’re always ready for tank emergencies. - • **Trusted Industry Leader:** Backed by 30+ years of continuous production and proven success in professional and home aquariums worldwide. - • **Versatile Water Compatibility:** Seamlessly supports both freshwater and brackish tanks, perfect for any aquatic setup or maintenance routine. - • **Essential for Ongoing Tank Health:** Reinforces biofilters after water changes, cleaning, or livestock additions to maintain a stable, thriving aquatic environment. ## Overview FritzZyme 7 delivers live, species-specific nitrifying bacteria that rapidly reduce toxic ammonia and nitrite levels in freshwater and brackish aquariums. With over 30 years of industry leadership, this easy-to-use, no-refrigeration-needed formula accelerates biofilter establishment and maintains aquatic health after maintenance or livestock changes, ensuring a stable environment for your fish. ## Description FritzZyme 7 contains 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 7 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 7 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 7 contains live freshwater-specific species of nitrifying bacteria. Review: Great product - This stuff always works for me, especially if I have light stock in my tank. I do fish in cycles all the time and never had any issues with fish dying on me thanks to this product. You could prevent ammonia, nitrite, and nitrate spikes by adding like 4-5 small fish to your aquarium. Don’t add too many fish! More fish means more waste, which your new system won’t be able to handle. Add easy aquarium plants (Hornwort, Salvania minima, Brazilian Pennywort) as many as you can. You need plants plus this product for a successful fish in cycle! Review: Helped Finish My Aquarium Cycle Much Faster - When I first set up my aquarium, I started with Seachem Stability. However, after 2 weeks, my nitrite levels still hadn’t reached zero. I decided to switch to FritzZyme because it contains live nitrifying bacteria. After I started using it, my tank finished cycling during the third week. I honestly wish I had started my aquarium with FritzZyme from the beginning. If you’re looking for a product to help establish the nitrite cycle in a new tank, I highly recommend this one. Just make sure to follow the dosing instructions on the bottle for the best results. And ease of use. ## Features - 🐟 Live Nitrifying Bacteria for Rapid Cycle: FritzZyme 7 Freshwater contains live, species-specific strains of nitrifying bacteria, proven to quickly reduce toxic ammonia and nitrite levels, significantly reducing fish loss and cycle time in new and established aquariums. - 🌊 Versatile and Easy-to-Use: Ideal for use in both fresh and brackish water systems, FritzZyme 7 is perfect for post-maintenance applications, after water changes, aggressive cleaning, adding new livestock, or when changing filter media, ensuring a stable and healthy aquatic environment. - 🙌 No Refrigeration Needed with One Year Shelf Life: This product is uniquely buffered for long-term stability, eliminating the need for refrigeration and offering a convenient one-year shelf life, making it a hassle-free solution for aquarium maintenance. - ⭐ Proven Success in Aquatic Care: With over 30 years of continuous production and development, Fritz Aquatics is a leader in the industry, delivering the highest quality, viable nitrifying bacteria. This product represents years of proven success in professional and home aquariums alike. - ❤️ Benefits Beyond Cycling: FritzZyme 7 not only accelerates the establishment of biofilters in new tanks but is also essential in reinforcing the biofilter after any system disturbance, ensuring ongoing stability and health for your aquatic pets. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002DGKAO | | Allergen Information | Almonds Free | | Best Sellers Rank | #6,531 in Pet Supplies ( See Top 100 in Pet Supplies ) #41 in Aquarium Water Treatments | | Brand | Fritz Aquatics | | Brand Name | Fritz Aquatics | | Customer Reviews | 4.6 out of 5 stars 3,388 Reviews | | Global Trade Identification Number | 00080531802090 | | Included Components | Fritz Aquatics 80209 FritzZyme 7 Nitrifying Bacteria for Fresh Water Aquariums, 16-Ounce | | Item Form | Liquid | | Item Type Name | Fritz Aquatics 80209 FritzZyme 7 Nitrifying Bacteria for Fresh Water Aquariums, 16-Ounce | | Item Weight | 0.3 Ounces | | Liquid Volume | 473 Milliliters | | Manufacturer | Fritz Aquatics | | Manufacturer Part Number | 80209 | | Model Number | 80209 | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Fish | | UPC | 080531802090 | | Unit Count | 1 Count | | Warranty Description | See Manufacturers Website | ## Product Details - **Brand:** Fritz Aquatics - **Item Form:** Liquid - **Item Weight:** 0.3 Ounces - **Liquid Volume:** 473 Milliliters - **Number of Packs:** 1 ## Images ![Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (16-Ounce) - Image 1](https://m.media-amazon.com/images/I/61wqrjhurwL.jpg) ![Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (16-Ounce) - Image 2](https://m.media-amazon.com/images/I/71E5zDHzQoL.jpg) ![Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (16-Ounce) - Image 3](https://m.media-amazon.com/images/I/718KUi0MteL.jpg) ![Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (16-Ounce) - Image 4](https://m.media-amazon.com/images/I/81lz+6vbKpL.jpg) ![Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (16-Ounce) - Image 5](https://m.media-amazon.com/images/I/81-X7U3CBSL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Would this be good for kickstarting a new aquaponics system?** A: Yes. It works excellent. **Q: So just got my gallon jug in... It has a slight odor to it but its pink in color, not dark or anything...is it still good?** A: Absolutely. I have used a lot of this stuff, and have received it in slightly brown colors all the ways to the pinkish color, and it always has an earthy odor to it. It always has worked for me. **Q: Will it work if I put it before adding ammonia to the tank?** A: Assume you're using the ammonia to cycle/start a new tank? Pure ammonia is not to be added if there will be fish in the tank, only when doing a fish-less cycle; the fish and their waste will supply the ammonia for the bacteria to grow and survive; be sure to keep testing the parameters of the water with a test kit; look up the nitrogen cycle **Q: Is it supposed to be pink/purple? Thank you.** A: I havent seen a purple color yet so far. Mine been a light to dark pink color. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product *by N***M on June 14, 2026* This stuff always works for me, especially if I have light stock in my tank. I do fish in cycles all the time and never had any issues with fish dying on me thanks to this product. You could prevent ammonia, nitrite, and nitrate spikes by adding like 4-5 small fish to your aquarium. Don’t add too many fish! More fish means more waste, which your new system won’t be able to handle. Add easy aquarium plants (Hornwort, Salvania minima, Brazilian Pennywort) as many as you can. You need plants plus this product for a successful fish in cycle! ### ⭐⭐⭐⭐⭐ Helped Finish My Aquarium Cycle Much Faster *by M***K on July 5, 2026* When I first set up my aquarium, I started with Seachem Stability. However, after 2 weeks, my nitrite levels still hadn’t reached zero. I decided to switch to FritzZyme because it contains live nitrifying bacteria. After I started using it, my tank finished cycling during the third week. I honestly wish I had started my aquarium with FritzZyme from the beginning. If you’re looking for a product to help establish the nitrite cycle in a new tank, I highly recommend this one. Just make sure to follow the dosing instructions on the bottle for the best results. And ease of use. ### ⭐⭐⭐⭐⭐ I'm impressed! Don't wait on getting this product! *by R***L on August 4, 2025* This is my first time using this product. The reviews spoke highly of this company. I started with ghost feeding the first week, but wasn't getting as much ammonia as I wanted to begin the cycle. I got the ammonia that goes along with this bacteria in a bottle. Got the ammonia up to 4ppm 2 nights ago. Yesterday, this bottle came in, and I dosed it as recommended. This morning I did my tank parameter testing with the API Master Kit. In my cycling tank it read 2.0ppm ammonia, 0 nitrites, and 5.0ppm nitrates! It just skipped right over nitrites! That tells me this product is VERY effective! Considering it's taken me months to cycle other tanks, this is mind blowing to me. I'm glad I listened to experienced folks that using high quality ammonia and live nitrifying bacteria is FAR superior to ghost feeding. I purchased the smallest bottles they have, and I'll still have nearly all of it! Well, I guess that means I'm just going to have to get more aquariums, ha! It's so easy I'm still processing this. Don't sleep on these products, the value far exceeds their price! I'm also glad this can be used as a maintenance for established tanks. It will be a great product to have on hand to maintain a well functioning cycle. ## Frequently Bought Together - Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (16-Ounce) - API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored - Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier 500 ml --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/3269493-fritz-aquatics-fritzzyme-7-live-nitrifying-bacteria-naturally-removes-amonia](https://www.desertcart.us/products/3269493-fritz-aquatics-fritzzyme-7-live-nitrifying-bacteria-naturally-removes-amonia) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-13*