--- product_id: 2858702 title: "U4 Bio-Foam Pad, Replacement Underwater Aquarium Filter Media, A488" brand: "fluval" price: "51.75 DT" currency: TND in_stock: false reviews_count: 13 category: "Fluval" url: https://www.desertcart.tn/products/2858702-u4-bio-foam-pad-replacement-underwater-aquarium-filter-media-a488 store_origin: TN region: Tunisia --- # Optimized pore size for water flow Custom-fit foam pad Long-lasting clog-resistant filtration U4 Bio-Foam Pad, Replacement Underwater Aquarium Filter Media, A488 **Brand:** fluval **Price:** 51.75 DT **Availability:** ❌ Out of Stock ## Summary > 🧼 Keep your aquatic world crystal clear with Fluval’s precision bio-foam! ## Quick Answers - **What is this?** U4 Bio-Foam Pad, Replacement Underwater Aquarium Filter Media, A488 by fluval - **How much does it cost?** 51.75 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/2858702-u4-bio-foam-pad-replacement-underwater-aquarium-filter-media-a488) ## 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 - • **Flow-Optimized Foam:** Ideal pore size balances maximum water flow with superior particle capture, reducing clogging and maintenance frequency. - • **Trusted Brand Legacy:** From the pioneers of 3-stage filtration technology, Fluval delivers quality and innovation you can rely on. - • **Durable & Low-Maintenance:** Crafted for long-lasting performance, this bio-foam pad keeps your tank pristine with minimal upkeep. - • **Precision Fit, Zero Escape:** Engineered to snugly fit the Fluval U4 filter chamber, ensuring no debris bypasses your filtration system. - • **Versatile Aquatic Compatibility:** Perfectly suited for freshwater, saltwater, and reptile tanks—one pad to rule all your aquatic habitats. ## Overview The Fluval U4 Bio-Foam Pad is a custom-designed replacement filter media that provides effective mechanical filtration by capturing large debris and particles. Its optimized pore size ensures efficient water flow with less clogging, extending filter life. Compatible with freshwater, saltwater, and reptile tanks, it fits perfectly inside the Fluval U4 Underwater Filter chamber to prevent debris escape. Backed by Fluval’s legacy of innovation since 1975, this durable foam pad offers reliable, low-maintenance filtration for all aquatic enthusiasts. ## Description The Fluval Bio-Foam Pad was designed specifically for the U4 Underwater Filter model to captures large particles and debris for effective mechanical filtration, the crucial first stage in the filtration process. Custom fit to prevent bypass, the pad has a pore size that allows efficient water flow with less clogging for long-lasting filtration. The Fluval Bio-Foam Pad is suitable for freshwater, marine or reptile environments. For more fish tank accessories, check out other Fluval products including aquarium filters, aquarium heaters, aquarium air pumps, aquarium lights, aquarium rocks, aquarium thermometers, and aquarium stands. Fluval has a wide variety of products that are perfect for your pet fish to enjoy in any large fish tank, small fish tank, saltwater tank or freshwater tank. Fluval broke onto the aquatic scene in 1975 by introducing the world’s first 3-stage filter with synchronous motor technology – a breakthrough that is still applied in the industry today. Since then, Fluval has built a legacy around this pioneering spirit, relentlessly adapting in a changing world to launch innovative aquarium products that remain at the forefront of technology, and which set the bar in quality, style and functionality. Fluval’s mission is not just about building products that mimic the natural world, but inspiring aquarists of all skill levels to enjoy and respect the hobby for generations to come. Review: Works great - fit like they should, some people don't like this filter in the reviews but they do a decent job and are easy to take to take out and rinse. Review: Great quality unless you build your own filters. - Go with the name brand. Save the headache. ## Features - Provides effective mechanical filtration - Fits perfectly inside the filter chamber to prevent debris from escaping - Ideal pore size allows efficient water flow, less clogging and long-lasting filtration - Suitable for freshwater, saltwater or reptile environments - Specially designed for use with the Fluval U4 Underwater Filter ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001XRSSJ4 | | ASIN | B001XRSSJ4 | | Age Range Description | All Life Stages | | Best Sellers Rank | #33,743 in Pet Supplies ( See Top 100 in Pet Supplies ) #390 in Aquarium Filter Accessories | | Brand Name | Fluval | | Color | White | | Customer Reviews | 4.7 4.7 out of 5 stars (1,600) | | Date First Available | August 19, 2004 | | Date First Available | August 19, 2004 | | Department | Unisex-Adult | | Department | Unisex-Adult | | Directions | Insert the pad into the Fluval U4 Underwater Filter chamber. Replace as needed based on filter usage and tank conditions. | | Included Components | All items in description | | Is Discontinued By Manufacturer | No | | Item Dimensions LxWxH | 2.7 x 2.7 x 11 inches | | Item Package Dimensions L x W x H | 11.14 x 2.72 x 1.54 inches | | Item Weight | 0.04 Kilograms | | Item model number | A488 | | Item model number | A488 | | Manufacturer | Rolf C. Hagen (USA) Corp. | | Manufacturer | Rolf C. Hagen (USA) Corp. | | Material | Plastic | | Model Name | Hagen FLUVAL U4 FOAM PAD | | Number of Items | 1 | | Product Dimensions | 2.7 x 2.7 x 11 inches; 1.34 ounces | | Size | U4 | | Specific Uses for Product | Indoor | | Style | Bio-Foam | | Target Audience Keyword | algae-eaters, arachnids, arthropods, bats-animals, bearded-dragons, bees, beetles, betta-fish, bottom-feeder-fish, butterflies, cichlid-fish, crabs, dragonflies, fish, frogs, geckos, goldfish, hermit-crabs, iguanas, insects, invertebrate-fish, ladybugs, lizards, mollusks, newts, octopuses, rays, reptiles, salamanders, sharks, snails, snakes, spiders, tortoises, turtles | | Warranty Description | Manufacturer Warranty | ## Product Details - **Brand:** Fluval - **Item Form:** Foam - **Item Weight:** 0.04 Kilograms - **Manufacturer:** Rolf C. Hagen (USA) Corp. - **UPC:** 015561104883 ## Images ![U4 Bio-Foam Pad, Replacement Underwater Aquarium Filter Media, A488 - Image 1](https://m.media-amazon.com/images/I/51mpiwLZeFL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great *by A***R on December 30, 2023* fit like they should, some people don't like this filter in the reviews but they do a decent job and are easy to take to take out and rinse. ### ⭐⭐⭐⭐⭐ Great quality unless you build your own filters. *by D***. on November 7, 2025* Go with the name brand. Save the headache. ### ⭐⭐⭐⭐⭐ Special water filters for aquariums *by N***E on January 11, 2026* Can’t find these in stores any more. Happy I could find them on Amazon. They fit my aquarium filter perfectly ## Frequently Bought Together - Fluval U4 Bio-Foam Pad, Replacement Underwater Aquarium Filter Media, A488 - Fluval U Underwater Filter BioMax - Fluval U4 Poly-Carb Cartridge, Replacement Underwater Aquarium Filter Media, 2-Pack, A492 --- ## 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.tn/products/2858702-u4-bio-foam-pad-replacement-underwater-aquarium-filter-media-a488](https://www.desertcart.tn/products/2858702-u4-bio-foam-pad-replacement-underwater-aquarium-filter-media-a488) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-01*