---
product_id: 48127516
title: "FLUVAL U4 Internal Filter, 240 Litre"
brand: "fluval"
price: "61.39 OMR"
currency: OMR
in_stock: true
reviews_count: 8
category: "Fluval"
url: https://www.desertcart.com.om/products/48127516-fluval-u4-internal-filter-240-litre
store_origin: OM
region: Oman
---

# 240L capacity ultra-quiet operation 3-stage filtration FLUVAL U4 Internal Filter, 240 Litre

**Brand:** fluval
**Price:** 61.39 OMR
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your aquarium game with whisper-quiet, crystal-clear flow!

## Quick Answers

- **What is this?** FLUVAL U4 Internal Filter, 240 Litre by fluval
- **How much does it cost?** 61.39 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/48127516-fluval-u4-internal-filter-240-litre)

## 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

- • **Tailored Flow Control:** Adjustable flow settings with 3 spray modes (top, middle, bottom) to create the perfect aquatic environment.
- • **Sleek, Discreet Design:** Modern, compact metal build blends seamlessly into any tank setup, elevating your aquarium’s aesthetic.
- • **Hassle-Free Maintenance:** Top-access design makes cleaning and filter replacement quick and easy—because your time is valuable.
- • **Whisper-Quiet Performance:** Engineered for near-silent operation, so your workspace or living room stays peaceful and distraction-free.
- • **Crystal Clear Water, Effortlessly:** Advanced 3-stage filtration with activated carbon and ceramic media ensures pristine aquarium clarity.

## Overview

The FLUVAL U4 Internal Filter is a high-performance, 240-litre capacity aquarium filter featuring a 3-stage biological and activated carbon filtration system. Designed for quiet, efficient operation with adjustable flow control and a sleek metal build, it offers easy top-access maintenance. Ideal for professional millennial aquarists seeking a blend of style, function, and peace of mind.

## Description

Free delivery and returns on eligible orders. Buy FLUVAL U4 Internal Filter, 240 Litre at desertcart UK.

Review: Must have ! - Best in tank filter I’ve had. Bought as original tank filter went down in my 130l , the pros of this filter are - -super quite , hardly any noise -smart looking / blends in / fits nicely -3 different spray modes (top , bottom or middle for gentle flow) So easy to use / setup and for maintenance The water is really really clear with the active carbon in the filter , it comes with ceramic media too which is a bonus Overall really good filter , highly recommend this in tank instead of external canister
Review: Good filters, quiet in operation - Brought to replace a failing one. I find these last a few years and then start failing. I like this filter, it is quiet and does the job well. Needs cleaning about every 2 weeks in my 100L tank.

## Features

- Warning:Not suitable for children under 3 years. For use under adult supervision
- Top Access - for easy maintenance
- Adjustable flow control
- 3 Stage Filtration

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001XRXY1G |
| Best Sellers Rank | 3,765 in Pet Supplies ( See Top 100 in Pet Supplies ) 10 in Aquarium Filters |
| Brand | Fluval |
| Capacity | 240 litres |
| Country Of Origin | Italy |
| Customer Reviews | 4.2 out of 5 stars 7,863 Reviews |
| Global Trade Identification Number | 00015561104807 |
| Included Components | Filter |
| Included components | Filter |
| Installation Type | Freestanding |
| Installation type | Freestanding |
| Item Type Name | HAGEN FLUVAL U4 UNDERWATER FILTER |
| Item Weight | 1.12 Kilograms |
| Manufacturer | HAGEN |
| Material | Metal |
| Material Type | Metal |
| Maximum Flow Rate | 1000 Litres Per Hour |
| Model Name | Fluval A Filtro Interno U |
| Model Number | A480A1 |
| Power Source | Battery Powered |
| Product Warranty | FALSE |
| Purification Method | Biological filtration, activated carbon |
| Purification method | Biological filtration, activated carbon |
| Supported Water TDS Level Maximum (PPM) | 300 |
| UPC | 015561104807 764999862437 155611048009 015561104784 015561104876 081175371515 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 80 Degrees Fahrenheit |

## Product Details

- **Brand:** Fluval
- **Capacity:** 240 litres
- **Included components:** Filter
- **Installation type:** Freestanding
- **Item weight:** 1.12 Kilograms
- **Material:** Metal
- **Maximum flow rate:** 1000 Litres Per Hour
- **Model name:** Fluval A Filtro Interno U
- **Power source:** Manual Operation
- **Purification method:** Biological filtration, activated carbon

## Images

![FLUVAL U4 Internal Filter, 240 Litre - Image 1](https://m.media-amazon.com/images/I/41T6Zfskp5L.jpg)

## Available Options

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

## Questions & Answers

**Q: Does the whole unit go under water? No spray bar to make a noise? All the aeration underwater bubbles? My filter at the moment very noisy!**
A: its very quiet, just a small hum if you get near it. It has 3 settings, one makes bubbles, the other ones are silent, you dont have to have the bubbles if the unit is under water, mine is just above the surface, i dont like to trail the wire in the water but some people do and the unit can sit in the bottom of the tank, it is large but a few plants will cover it, hope this helps

**Q: Hi does the filer come ready to use or do I have to buy the filters and foam seperately?**
A: Hi Leigh.It comes with the filters and biomax filter media :-) I get my refills from Amazon seller The Aquahut for £11.59 for a 2 pack foam pad, 2 pack cartridge pack and 170g box of biomax. Good value and very reliable seller. Have used them ever since I purchased my Fluval U2. Happy to help :-)

**Q: I have lost the grey stopper that regulate the slow from the top filter. Is it possible to purchase these separately please?**
A: You can use a blob of bluetac and vary the air flow like that.

**Q: Will this filter work if I use it horizontally on its side, rather than vertically? I want to use it in my turtle tank which has a low water level**
A: I can’t see it being a problem. How deep is your water though? This is enough filtration for a 110l tank so if you’ve only got a bit of water in the bottom a sponge filter may be a better option?

## Customer Reviews

### ⭐⭐⭐⭐⭐ Must have !
*by T***E on 29 December 2025*

Best in tank filter I’ve had. Bought as original tank filter went down in my 130l , the pros of this filter are - -super quite , hardly any noise -smart looking / blends in / fits nicely -3 different spray modes (top , bottom or middle for gentle flow) So easy to use / setup and for maintenance The water is really really clear with the active carbon in the filter , it comes with ceramic media too which is a bonus Overall really good filter , highly recommend this in tank instead of external canister

### ⭐⭐⭐⭐⭐ Good filters, quiet in operation
*by P***G on 27 December 2025*

Brought to replace a failing one. I find these last a few years and then start failing. I like this filter, it is quiet and does the job well. Needs cleaning about every 2 weeks in my 100L tank.

### ⭐⭐⭐⭐⭐ Amazing filter top marks all round
*by S***Y on 1 July 2025*

We bought this as the filter we had was not doing a great job water was never crystal clear. Bought the u2 and over night the water was clear. The pictures added to this review are from this weekends water change/aqua scaping. The water got super cloudy due moving the sand about. With in a few hour a noticeable difference. This morning the tank was crystal clear. Out water is dark due to new wood tanens being in the water. But the water its self is beautifully clear. Quiet filter and easy to use. It is quite a big filter. We have ours hidden behind some wood. The three settings for bottom middle or top flow is great to have. Easily removed for filter changes. I cant recommend high enough. You can feel the quality. If you order this get a eu to uk convertor plug as mine came as an eu plug and not a uk one. Wasnt an expensive add. Even that doesn’t take away for how great the filter is

## Frequently Bought Together

- Fluval U4 Underwater Filter, Freshwater and Saltwater Aquarium Filter, A480,Black
- Fluval U4 Bio-Foam Pad, Replacement Underwater Aquarium Filter Media, A488
- Fluval U Underwater Filter BioMax

---

## 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.com.om/products/48127516-fluval-u4-internal-filter-240-litre](https://www.desertcart.com.om/products/48127516-fluval-u4-internal-filter-240-litre)

---

*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-01*