---
product_id: 307674099
title: "Fluval U3 Internal Filter Carbon Cartridge"
brand: "fluval"
price: "216 kr"
currency: DKK
in_stock: true
reviews_count: 5
url: https://www.desertcart.dk/products/307674099-fluval-u3-internal-filter-carbon-cartridge
store_origin: DK
region: Denmark
---

# Improves water clarity Custom fit for Fluval U3 Effective chemical filtration Fluval U3 Internal Filter Carbon Cartridge

**Brand:** fluval
**Price:** 216 kr
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your aquarium’s clarity—because your aquatic friends deserve the best!

## Quick Answers

- **What is this?** Fluval U3 Internal Filter Carbon Cartridge by fluval
- **How much does it cost?** 216 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/307674099-fluval-u3-internal-filter-carbon-cartridge)

## 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

- • **Effortless Maintenance:** Quick and easy replacement keeps your aquarium thriving without hassle or downtime.
- • **Tailored Precision Fit:** Designed exclusively for Fluval U3 filters ensuring seamless installation and optimal performance.
- • **Trusted by Enthusiasts:** Join thousands of satisfied users who rely on Fluval’s proven filtration technology.
- • **Versatile Filtration Power:** Perfectly compatible with freshwater, marine, and reptile habitats—one cartridge, endless possibilities.
- • **Crystal Clear Aquatic Environment:** Advanced carbon fiber traps fine debris and impurities for pristine water.

## Overview

The Fluval U3 Internal Filter Carbon Cartridge delivers superior chemical filtration with a custom fit for Fluval U3 filters. It efficiently traps fine debris, enhances water clarity, and removes impurities across freshwater, marine, and reptile environments. Lightweight and easy to replace, it’s a trusted choice for maintaining a pristine aquatic habitat.

## Description

Great value for money, top quality product. Great value for money, top quality product. Great value for money, top quality product. Great value for money, top quality product.

## Features

- Provides effective chemical filtration
- Custom fit for the Fluval U3 Filter
- Traps fine debris, improves water clarity and removes impurities
- Easy to replace
- Works in freshwater, marine or reptile environments

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Allergen Information | Nut Free |
| Asin | B001XRR3E0 |
| Best Sellers Rank | #177,497 in Kitchen (See Top 100 in Kitchen) #550 in Water Filter Cartridges |
| Brand Name | Fluval |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,285) 4.6 out of 5 stars |
| Global Trade Identification Number | 00015561104913 |
| Included Components | Fluval U3 Filter Poly/Carbon Catridge (2 pack) |
| Item Form | Cartridge |
| Item Type Name | U3 Poly/Carbon Cartridge (2pcs) |
| Item Weight | 0.03 Kilograms |
| Manufacturer | Hagen |
| Manufacturer Part Number | A491 |
| Model Number | A491 |
| Target Species | Fish |
| Unit Count | 1 Count |
| Upc | 015561104913 |

## Product Details

- **Brand:** Fluval
- **Item form:** Cartridge
- **Item weight:** 0.03 Kilograms
- **Manufacturer:** Hagen
- **UPC:** 015561104913

## Images

![Fluval U3 Internal Filter Carbon Cartridge - Image 1](https://m.media-amazon.com/images/I/41pxTmVeEXL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ policarbonato para el canister interno fluval u3
*by  on Reviewed in Mexico 11 December 2018*

muy buen material de policarbonato para usar en el compartimento del policarbonato junto con una esponja para la filtración quimica y mecánica que lleva este excelente canister interno fluval u3 , que es muy facil de limpiar, mis peces disco estan felices y muy agradecidos

### ⭐⭐⭐⭐⭐ Aquarium Filters
*by  on Reviewed in the United States 22 March 2026*

My favorite brand of filter replacements for my aquarium filters. Reliable product at a good price.

### ⭐⭐⭐⭐⭐ Filterpads für Fluval U3
*by  on Reviewed in Germany 24 February 2024*

Bestellt, zügig bekommen. Ersatz, wenn vorhandene Filterpads ihren Dienst versagen.Guter Fluval U3 Filter der nunmal diese Filtereinsätze benötigt. Der Preis ist allerdings heftig für die Filtereinsätze. Da sollte man/frau auch mal Rabatt bekommen bei mehrabnahme, meine Meinung

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**Shop now:** [https://www.desertcart.dk/products/307674099-fluval-u3-internal-filter-carbon-cartridge](https://www.desertcart.dk/products/307674099-fluval-u3-internal-filter-carbon-cartridge)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-06-23*