---
product_id: 2221488
title: "U4 Poly-Carb Cartridge, Replacement Underwater Aquarium Filter Media, 2-Pack, A492"
brand: "fluval"
price: "€ 21.25"
currency: EUR
in_stock: true
reviews_count: 13
category: "Fluval"
url: https://www.desertcart.it/products/2221488-u4-poly-carb-cartridge-replacement-underwater-aquarium-filter-media-2
store_origin: IT
region: Italy
---

# Optimized for aquatic health Eco-friendly replaceable cartridge Made in USA quality U4 Poly-Carb Cartridge, Replacement Underwater Aquarium Filter Media, 2-Pack, A492

**Brand:** fluval
**Price:** € 21.25
**Availability:** ✅ In Stock

## Summary

> 🐟 Keep your tank crystal clear and your fish thriving with Fluval’s trusted filtration power!

## Quick Answers

- **What is this?** U4 Poly-Carb Cartridge, Replacement Underwater Aquarium Filter Media, 2-Pack, A492 by fluval
- **How much does it cost?** € 21.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/2221488-u4-poly-carb-cartridge-replacement-underwater-aquarium-filter-media-2)

## 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

- • **Proven Performance:** Field-tested filtration media trusted by thousands of aquarium enthusiasts.
- • **Affordable Excellence:** Top-tier filtration without breaking your budget—because your fish deserve the best.
- • **Dual-Pack Convenience:** Two cartridges included to keep your aquarium pristine without interruption.
- • **Effortless Maintenance:** Quick and easy replacement ensures your fish enjoy continuous clean water.
- • **Premium USA Craftsmanship:** Engineered with precision and durability for your aquatic ecosystem.

## Overview

The Fluval U4 Poly-Carb Cartridge 2-Pack offers high-quality, USA-made replacement filter media designed for optimal underwater filtration. With easy installation and proven performance, these cartridges maintain superior water clarity and aquatic health, making them a must-have for dedicated aquarium managers.

## Description

Fluval U4 Poly-Carb Cartridge, Replacement Underwater Aquarium Filter Media, 2-Pack, A492

Review: Works great! - Works great!
Review: Fluval filter change - Comes with 2 filters, Fluval official media, Fluval filters work well for my fish tank needs.

## Features

- Made in the USA with quality materials
- Performance driven at affordable prices
- Field tested to ensure nothing but the best for your pet
- Easy to replace

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001XRVX8C |
| Allergen Information | Nut Free |
| Best Sellers Rank | #26,750 in Pet Supplies ( See Top 100 in Pet Supplies ) #285 in Aquarium Filter Accessories |
| Brand Name | Fluval |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,916) |
| Global Trade Identification Number | 00015561104920 |
| Included Components | Fluval U4 Poly-Carb Cartridge, Replacement Underwater Aquarium Filter Media, 2-Pack, A492 |
| Item Form | Cartridge |
| Item Type Name | Fluval U4 Poly-Carb Cartridge, Replacement Underwater Aquarium Filter Media, 2-Pack, A492 |
| Item Weight | 0.05 Kilograms |
| Manufacturer | Rolf C. Hagen (USA) Corp. |
| Manufacturer Part Number | A492 |
| Model Number | A492 |
| Target Species | Fish |
| UPC | 015561104920 |
| Unit Count | 1 Count |
| Warranty Description | Warranty |

## Product Details

- **Brand:** Fluval
- **Item Form:** Cartridge
- **Item Weight:** 0.05 Kilograms
- **Manufacturer:** Rolf C. Hagen (USA) Corp.
- **UPC:** 015561104920

## Images

![U4 Poly-Carb Cartridge, Replacement Underwater Aquarium Filter Media, 2-Pack, A492 - Image 1](https://m.media-amazon.com/images/I/519t8soBffL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great!
*by L***S on April 25, 2025*

Works great!

### ⭐⭐⭐⭐⭐ Fluval filter change
*by F***S on May 27, 2025*

Comes with 2 filters, Fluval official media, Fluval filters work well for my fish tank needs.

### ⭐⭐⭐⭐⭐ Go with the name brand and save a headache.
*by D***. on November 7, 2025*

If you don’t go with fluval name brand you have a 50/50 chance the filters are the correct length. I did this for a while to save a little money but more often than not I would have to double up the filters because they were the improper length. Also, not really worth it to fight with someone on a return like that. Go with the name brand

## Frequently Bought Together

- Fluval U4 Filter Carbon Cartridge
- Fluval U4 Internal Filter Foam Pad
- Fluval U Internal Filters Clean and Clear Cartridge, White

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**Shop now:** [https://www.desertcart.it/products/2221488-u4-poly-carb-cartridge-replacement-underwater-aquarium-filter-media-2](https://www.desertcart.it/products/2221488-u4-poly-carb-cartridge-replacement-underwater-aquarium-filter-media-2)

---

*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-05-14*