---
product_id: 254683874
title: "FX4/FX5/FX6 Bio-Foam 2-pack"
brand: "fluval"
price: "$763"
currency: MXN
in_stock: true
url: https://www.desertcart.mx/products/254683874-fx4-fx5-fx6-bio-foam-2-pack
store_origin: MX
region: Mexico
---

# Dual mechanical & biological filtration Traps fine particles for crystal-clear water Porous network for max bio surface FX4/FX5/FX6 Bio-Foam 2-pack

**Brand:** fluval
**Price:** $763
**Availability:** ✅ In Stock

## Summary

> 🧬 Elevate your aquarium’s ecosystem with next-level filtration finesse!

## Quick Answers

- **What is this?** FX4/FX5/FX6 Bio-Foam 2-pack by fluval
- **How much does it cost?** $763 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/254683874-fx4-fx5-fx6-bio-foam-2-pack)

## 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

- • **Fine Particle Trap:** Dense foam efficiently captures even the smallest debris, ensuring sparkling clean water.
- • **Maximized Surface Area:** Intricate porous foam structure boosts beneficial bacteria growth for a healthier aquatic ecosystem.
- • **Hassle-Free Maintenance:** Two-pack convenience means you’re always prepared for timely filter upgrades without downtime.
- • **Universal Compatibility:** Designed specifically for Fluval FX4, FX5, and FX6 canister filters—freshwater or saltwater ready.
- • **Dual-Action Filtration Power:** Combines mechanical and biological filtering to keep your aquarium pristine and thriving.

## Overview

The Fluval FX4/FX5/FX6 Bio-Foam 2-pack offers dual mechanical and biological filtration with a dense, porous structure that traps fine particles and supports beneficial bacteria growth. Compatible with Fluval FX4, FX5, and FX6 canister filters, it ensures clean, healthy water for both freshwater and saltwater aquariums.

## Description

FX4/FX5/FX6 Bio-Foam 2-pack

## Features

- Performs double duty as both mechanical and biological filter media
- Dense structure ideal for trapping small particles
- Intricate, porous network provides vast surface area to facilitate biological activity
- Helps create clean and healthy water conditions
- Includes two Bio-Foam inserts designed for use in Fluval FX4, FX5 and FX6 Canister Filters in freshwater and saltwater aquariums

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Pet Type | Fish |
| Product Dimensions | 6.35 x 19.56 x 23.11 cm; 81.65 g |
| Item model number | A239 |
| Breed Recommendation | Small Breeds |
| Pet Life Stage | All Life Stages |
| Item Form | other |
| Allergen Information | Nut Free |
| Color | Black |
| Size | 2 Count (Pack of 3) |
| Number of Items | 1 |
| Quantity | 1 |
| Special Features | Portable |
| Specific Uses | Indoor |
| batteries required | No |
| Batteries Included | No |
| Item Weight | 81.6 g |

## Product Details

- **Pet toy type:** Plush
- **Theme:** Einfarbig
- **Breed recommendation:** Small Breeds
- **Brand:** Fluval
- **Recommended uses for product:** Filtering Water in Aquariums

## Images

![FX4/FX5/FX6 Bio-Foam 2-pack - Image 1](https://m.media-amazon.com/images/I/71JDj1J5qgL.jpg)

## Available Options

This product comes in different **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

## 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

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**Shop now:** [https://www.desertcart.mx/products/254683874-fx4-fx5-fx6-bio-foam-2-pack](https://www.desertcart.mx/products/254683874-fx4-fx5-fx6-bio-foam-2-pack)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-02*