--- product_id: 2858702 title: "U4 Bio-Foam Pad, Replacement Underwater Aquarium Filter Media, A488" brand: "fluval" price: "€ 14.83" currency: EUR in_stock: true reviews_count: 13 category: "Fluval" url: https://www.desertcart.pt/products/2858702-u4-bio-foam-pad-replacement-underwater-aquarium-filter-media-a488 store_origin: PT region: Portugal --- # Optimized pore size for water flow Custom-fit foam pad Long-lasting mechanical filtration U4 Bio-Foam Pad, Replacement Underwater Aquarium Filter Media, A488 **Brand:** fluval **Price:** € 14.83 **Availability:** ✅ In Stock ## Summary > 🧼 Keep your tank pristine with the foam that filters like a pro! ## Quick Answers - **What is this?** U4 Bio-Foam Pad, Replacement Underwater Aquarium Filter Media, A488 by fluval - **How much does it cost?** € 14.83 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/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 - • **Durable & Dependable:** High-quality foam designed for extended use, saving you time and replacement costs. - • **Trusted Brand Legacy:** Backed by Fluval’s 40+ years of innovation in aquarium technology—join the community of savvy aquarists. - • **Effortless Water Flow:** Ideal pore size reduces clogging, ensuring your aquatic environment stays crystal clear longer. - • **Versatile Habitat Ready:** Perfect for freshwater, saltwater, and reptile tanks—one pad, endless ecosystems. - • **Precision Fit, Zero Bypass:** Engineered exclusively for Fluval U4 to lock in debris and maximize filtration efficiency. ## Overview The Fluval U4 Bio-Foam Pad is a precision-engineered replacement filter media designed exclusively for the Fluval U4 Underwater Filter. It provides effective mechanical filtration by capturing large debris with an optimized pore size that promotes efficient water flow and reduces clogging. Suitable for freshwater, saltwater, and reptile tanks, this durable foam pad ensures long-lasting performance and is part of Fluval’s trusted legacy in aquarium innovation. ## 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 well - I have a hard time finding these where I live. Easy to replace in my filter and works well 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 | | Allergen Information | Nut Free | | Best Sellers Rank | #53,062 in Pet Supplies ( See Top 100 in Pet Supplies ) #668 in Aquarium Filter Accessories | | Brand | Fluval | | Brand Name | Fluval | | Customer Reviews | 4.7 out of 5 stars 1,637 Reviews | | Global Trade Identification Number | 00015561104883 | | Included Components | All items in description | | Item Form | Foam | | Item Type Name | Hagen FLUVAL U4 FOAM PAD | | Item Weight | 1.28 ounces | | Manufacturer | Rolf C. Hagen (USA) Corp. | | Manufacturer Part Number | A488 | | Model Number | A488 | | Number of Items | 1 | | Pet Type | Amphibian, Fish, Reptile | | Target Species | Fish | | UPC | 015561104883 | | Unit Count | 1 Count | | 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) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works well *by J***T on July 11, 2026* I have a hard time finding these where I live. Easy to replace in my filter and works well ### ⭐⭐⭐⭐⭐ Great quality unless you build your own filters. *by D***. on November 7, 2025* Go with the name brand. Save the headache. ### ⭐⭐⭐⭐⭐ 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. ## 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.pt/products/2858702-u4-bio-foam-pad-replacement-underwater-aquarium-filter-media-a488](https://www.desertcart.pt/products/2858702-u4-bio-foam-pad-replacement-underwater-aquarium-filter-media-a488) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-08-23*