--- product_id: 2221474 title: "Fluval FX4/FX5/FX6 Bio-Foam, Replacement Aquarium Filter Media, 2-Pack, A239" brand: "fluval" price: "Rp748668" currency: IDR in_stock: true reviews_count: 13 category: "Fluval" url: https://www.desertcart.id/products/2221474-fluval-fx4-fx5-fx6-bio-foam-replacement-aquarium-filter-media store_origin: ID region: Indonesia --- # Dense porous structure for max surface area Dual mechanical & biological filtration Reusable & easy to rinse foam Fluval FX4/FX5/FX6 Bio-Foam, Replacement Aquarium Filter Media, 2-Pack, A239 **Brand:** fluval **Price:** Rp748668 **Availability:** ✅ In Stock ## Summary > 🧼 Elevate your aquarium’s clarity with filtration that works as hard as you do! ## Quick Answers - **What is this?** Fluval FX4/FX5/FX6 Bio-Foam, Replacement Aquarium Filter Media, 2-Pack, A239 by fluval - **How much does it cost?** Rp748668 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/2221474-fluval-fx4-fx5-fx6-bio-foam-replacement-aquarium-filter-media) ## 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 - • **Precision Fit:** Specifically engineered for Fluval FX4, FX5, and FX6 canister filters—no compromises, just perfect performance. - • **Double Duty Filtration:** Combines mechanical particle trapping with biological nitrification for crystal-clear water. - • **Effortless Maintenance:** Durable foam holds shape and rinses clean easily, keeping your tank pristine with minimal fuss. - • **Maximized Surface Area:** Intricate porous design boosts beneficial bacteria growth, ensuring a healthy aquatic ecosystem. - • **Value Pack Convenience:** Two replacement bio-foam inserts included—always have a backup ready to maintain peak filtration. ## Overview Fluval FX4/FX5/FX6 Bio-Foam Replacement Filters deliver superior dual mechanical and biological filtration with a dense, porous structure designed to trap fine particles and foster beneficial bacteria growth. Engineered for perfect compatibility with Fluval high-performance canister filters, these reusable foam inserts ensure easy maintenance and sustained water clarity. Each pack includes two durable bio-foam filters, making it an essential upgrade for freshwater and saltwater aquarists committed to a pristine aquatic environment. ## Description Fluval Bio-Foam performs double duty as both an effective mechanical and biological media. It is specifically designed for use in Fluval FX4, FX5 and FX6 High Performance Canister Filters. Bio-Foam provides outstanding mechanical and biological filtration thanks to an intricate pore structure that offers a large surface area for nitrifying biological activity. In addition, it trap small particles that are not retained by the first stage of foam filtration.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: Fits Perfectly and Works Well - These bio-foam inserts fit exactly as expected and have been working without any issues. The foam is well made, holds its shape, and is easy to rinse and reuse. They’ve been a reliable replacement option and perform just as they should. No mess, no fuss, and no complaints. Simple, effective, and dependable. Review: Reliable and effective - I will always use fluval products in my aquariums and especially in all my filters. I recommend not putting off brand products in your filters. Very good value for the money! ## Features - Replacement Filtration: Bio-Foam filter inserts are designed for use in Fluval FX4, FX5 and FX6 Canister Filters in freshwater and saltwater aquariums. - Double Duty: These Bio-Foam filters perform as both mechanical and biological filters. - Intricate Design: Bio-Foam’s dense structure is ideal for trapping small particles, with an intricate, porous network that provides vast surface area to facilitate biological activity. - Maintain Clean Environment: Proper filtration helps create clean and healthy water conditions. - Pack Includes: Each package contains two replacement Bio-Foam filters. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00D6DRSK8 | | ASIN | B00D6DRSK8 | | Allergen Information | Nut Free | | Best Sellers Rank | #8,119 in Pet Supplies ( See Top 100 in Pet Supplies ) #52 in Aquarium Filter Accessories | | Brand Name | Fluval | | Customer Reviews | 4.8 4.8 out of 5 stars (1,213) | | Date First Available | June 4, 2013 | | Department | Filter Media | | Global Trade Identification Number | 00015561102391 | | Included Components | All Items listed in Description | | Is Discontinued By Manufacturer | No | | Item Form | Stick | | Item Type Name | HAGEN FLUVAL FX5/6 BIO-FOAM | | Item Weight | 0.18 Pounds | | Item model number | A239 | | Manufacturer | Rolf C. Hagen (USA) Corp. | | Manufacturer | Rolf C. Hagen (USA) Corp. | | Manufacturer Part Number | A239 | | Model Number | A239 | | Product Dimensions | 2.5 x 7.7 x 9.1 inches; 2.88 ounces | | Target Species | Fish | | UPC | 015561102391 | | Unit Count | 2 Count | | Warranty Description | Manufacturer Warranty | ## Product Details - **Brand:** Fluval - **Item Form:** Stick - **Item Weight:** 0.18 Pounds - **Manufacturer:** Rolf C. Hagen (USA) Corp. - **UPC:** 015561102391 ## Images ![Fluval FX4/FX5/FX6 Bio-Foam, Replacement Aquarium Filter Media, 2-Pack, A239 - Image 1](https://m.media-amazon.com/images/I/71JDj1J5qgL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: How frequent this should be changed? since its carbon impregnated.** A: Fluval says once a month... To me It all really depends on water change regime. **Q: Will these work in the FX4 or are they a different size?** A: Yes. It will fit your FX4. **Q: Do these also fit the fluval fx4?** A: Every single part/pad etc made for FX4/5/6 are interchangeable with the exception of the pump motor for FX4. Everything else and I mean everything else fits all FX series. **Q: Can this be used for preparation for an Axolotl? And if so, is it recommended?** A: I am not sure. Using it helps in toxic ammonia. Your critter lives in murky, muddy water I believe. Ammonia can build up anywhere. You might get contact your pet store. Sorry ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fits Perfectly and Works Well *by K***T on January 11, 2026* These bio-foam inserts fit exactly as expected and have been working without any issues. The foam is well made, holds its shape, and is easy to rinse and reuse. They’ve been a reliable replacement option and perform just as they should. No mess, no fuss, and no complaints. Simple, effective, and dependable. ### ⭐⭐⭐⭐⭐ Reliable and effective *by K***N on November 19, 2024* I will always use fluval products in my aquariums and especially in all my filters. I recommend not putting off brand products in your filters. Very good value for the money! ### ⭐⭐⭐⭐⭐ Fast shipping *by C***E on August 2, 2024* Love getting these from Amazon. They are a good price, comes fast, and are exactly what I need for my filter. They are easy to clean and swap out. They are perfect for my 125 gallon turtle tank. ## Frequently Bought Together - Fluval FX4/FX5/FX6 Bio-Foam, Replacement Aquarium Filter Media, 2-Pack, A239 - Fluval Carbon Filter Media for Aquariums, Premium Bituminous Carbon Inserts, 100-gram Nylon Bags, 3 Count (Pack of 1), A1440 - Hagen FL FX4/6 Phosphate Remover PAD 3PK --- ## 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.id/products/2221474-fluval-fx4-fx5-fx6-bio-foam-replacement-aquarium-filter-media](https://www.desertcart.id/products/2221474-fluval-fx4-fx5-fx6-bio-foam-replacement-aquarium-filter-media) --- *Product available on Desertcart Indonesia* *Store origin: ID* *Last updated: 2026-05-08*