--- product_id: 2858698 title: "Fluval U Underwater Filter BioMax" brand: "fluval" price: "AED 78" currency: AED in_stock: true reviews_count: 13 category: "Fluval" url: https://www.desertcart.ae/products/2858698-fluval-u-underwater-filter-biomax store_origin: AE region: United Arab Emirates --- # Works in freshwater & marine tanks Optimized pore system for bacteria growth Half-media replacement for stable bio-cycle Fluval U Underwater Filter BioMax **Brand:** fluval **Price:** AED 78 **Availability:** ✅ In Stock ## Summary > ♻️ Keep your tank’s ecosystem thriving with Fluval U BioMax — the secret to aquatic perfection! ## Quick Answers - **What is this?** Fluval U Underwater Filter BioMax by fluval - **How much does it cost?** AED 78 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/2858698-fluval-u-underwater-filter-biomax) ## Best For - fluval enthusiasts ## Why This Product - Trusted fluval brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Yet Powerful:** Small granules pack a punch in ammonia and nitrate control, ensuring crystal-clear water and happy fish. - • **Dual Environment Ready:** Engineered to perform in both freshwater and marine aquariums, so your aquatic world stays balanced. - • **Thrives with Beneficial Bacteria:** Complex bio rings create the perfect habitat for essential bacteria that keep your tank pristine. - • **Universal Fit for Fluval U Series:** Seamlessly compatible with U2, U3, and U4 filters—upgrade without hassle. - • **Smart Maintenance, Maximum Efficiency:** Replace only half the media at a time to preserve your tank’s healthy bacterial ecosystem and avoid downtime. ## Overview Fluval U Underwater Filter BioMax is a specialized bio-media designed for Fluval U2, U3, and U4 filters. Its advanced porous structure fosters beneficial bacteria growth, effectively reducing ammonia and nitrate levels in both freshwater and marine aquariums. The product supports easy maintenance by recommending partial media replacement to sustain a healthy biological cycle, ensuring optimal water quality and a thriving aquatic environment. ## Description Fluval BIOMAX provides an optimal environment for beneficial bacteria growth. The bio rings have a complex pore system creating an optimal environment where beneficial bacteria can thrive. It also reduces and controls ammonia and nitrate. For freshwater and marine environments.For U series filter models: U2,U3,U4 Review: Good Fluval U Bio Media for the underwater filters. Good Price. Largest package volume that I can find for these. - The Fluval U Undewater Filter BioMax works as expected with my Fluval U filters. This is the largest packaging of it that I have seen, so I always buy it here on desertcart because of the price versus getting it at the local fish store. I have desertcart Prime, so I get Free 2-day shipping and I don't have to pay for shipping on my orders which is very nice. If Fluval made these in a larger package volume, I would buy that. Make sure you only remove half your bio media when you clean or make changes in your filter so to make sure you maintain a decent established bacterial content in your tank to maintain a working cycle. Don't wash or clean under the tap, or the chlorinated water will kill off the good bacteria especially on the bio- media you are keeping in the filter. Rinse with tank water if necessary. I definitely recommend these for your Fluval U Underwater Filter. They are the BioMax media that you use with the filter. You can add other things as well into the cartridge chamber like carbon, zeo-carbon or ammonia removers if you need it. Fluval has them available for sale as well, and they are available on desertcart. Fluval Carbon, 100-gram Nylon Bags - 3-Pack Fluval Zeo-Carb, 150 Gram, 3-Pack Nylon Bags Fluval Ammonia Remover, 180-gram Nylon Bags - 3-Pack Make sure you are buying the correct BioMax bio media. These are often mistakenly confused with the larger BioMax Bio Rings which will not work or fit in the Fluval U series underwater filters. Review: Worth it - They work for my cichlids tank is definately cleaner ## Features - Replenish only half at one time - Fits the Fluvial U2, U3 and U4 Filters - Promotes growth of beneficial bacteria - Works in freshwater or marine environments ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001XRR2IM | | ASIN | B001XRR2IM | | Allergen Information | Nut Free | | Best Sellers Rank | #32,444 in Pet Supplies ( See Top 100 in Pet Supplies ) #353 in Aquarium Filter Accessories | | Brand Name | Fluval | | Customer Reviews | 4.8 4.8 out of 5 stars (3,547) | | Date First Available | August 19, 2004 | | Global Trade Identification Number | 00015561104951 | | Included Components | Fluval U Underwater BioMax Filter | | Is Discontinued By Manufacturer | No | | Item Form | Granules | | Item Type Name | Hagen FLUVAL"U"FILTER BIOMAX;170G | | Item Weight | 0.1 Pounds | | Item model number | A495 | | Liquid Volume | 110 Liters | | Manufacturer | Rolf C. Hagen (USA) Corp. | | Manufacturer | Rolf C. Hagen (USA) Corp. | | Manufacturer Part Number | A495 | | Model Number | A495 | | Product Dimensions | 2.7 x 1.5 x 10.6 inches; 1.6 ounces | | Target Species | Fish | | UPC | 015561104951 | | Unit Count | 1 Count | | Warranty Description | Manufacturer Warranty | ## Product Details - **Brand:** Fluval - **Item Form:** Granules - **Item Weight:** 0.1 Pounds - **Liquid Volume:** 110 Liters - **Manufacturer:** Rolf C. Hagen (USA) Corp. ## Images ![Fluval U Underwater Filter BioMax - Image 1](https://m.media-amazon.com/images/I/818XJ-6cv9L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good Fluval U Bio Media for the underwater filters. Good Price. Largest package volume that I can find for these. *by B***S on March 5, 2016* The Fluval U Undewater Filter BioMax works as expected with my Fluval U filters. This is the largest packaging of it that I have seen, so I always buy it here on Amazon because of the price versus getting it at the local fish store. I have Amazon Prime, so I get Free 2-day shipping and I don't have to pay for shipping on my orders which is very nice. If Fluval made these in a larger package volume, I would buy that. Make sure you only remove half your bio media when you clean or make changes in your filter so to make sure you maintain a decent established bacterial content in your tank to maintain a working cycle. Don't wash or clean under the tap, or the chlorinated water will kill off the good bacteria especially on the bio- media you are keeping in the filter. Rinse with tank water if necessary. I definitely recommend these for your Fluval U Underwater Filter. They are the BioMax media that you use with the filter. You can add other things as well into the cartridge chamber like carbon, zeo-carbon or ammonia removers if you need it. Fluval has them available for sale as well, and they are available on Amazon. Fluval Carbon, 100-gram Nylon Bags - 3-Pack Fluval Zeo-Carb, 150 Gram, 3-Pack Nylon Bags Fluval Ammonia Remover, 180-gram Nylon Bags - 3-Pack Make sure you are buying the correct BioMax bio media. These are often mistakenly confused with the larger BioMax Bio Rings which will not work or fit in the Fluval U series underwater filters. ### ⭐⭐⭐⭐⭐ Worth it *by M***D on April 22, 2025* They work for my cichlids tank is definately cleaner ### ⭐⭐⭐⭐⭐ Great quality *by D***. on November 7, 2025* Great quality, go with the name brand and not off brands. Trust what you’re putting into your tank. ## Frequently Bought Together - Fluval U Underwater Filter BioMax - Fluval U4 Bio-Foam Pad, Replacement Underwater Aquarium Filter Media, A488 - Fluval U3 Underwater Filter Foam Pad --- ## 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.ae/products/2858698-fluval-u-underwater-filter-biomax](https://www.desertcart.ae/products/2858698-fluval-u-underwater-filter-biomax) --- *Product available on Desertcart United Arab Emirates* *Store origin: AE* *Last updated: 2026-04-23*