---
product_id: 2858693
title: "FX6 High Performance Aquarium Filter, up to 400 Gal."
brand: "fluval"
price: "€ 890.39"
currency: EUR
in_stock: true
reviews_count: 13
category: "Fluval"
url: https://www.desertcart.pt/products/2858693-fx6-high-performance-aquarium-filter-up-to-400-gal
store_origin: PT
region: Portugal
---

# 925 US Gal/hr pump output 1.5 Gal media capacity, stackable baskets Smart Pump tech for auto-optimization FX6 High Performance Aquarium Filter, up to 400 Gal.

**Brand:** fluval
**Price:** € 890.39
**Availability:** ✅ In Stock

## Summary

> 💦 Elevate your aquarium game with the FX6 — where power meets precision.

## Quick Answers

- **What is this?** FX6 High Performance Aquarium Filter, up to 400 Gal. by fluval
- **How much does it cost?** € 890.39 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/2858693-fx6-high-performance-aquarium-filter-up-to-400-gal)

## 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

- • **Compact Yet Mighty:** Sleek 21-inch design fits discreetly under most tanks without sacrificing power.
- • **Powerful 925 GPH Flow:** Turbocharge your aquarium’s clarity with industry-leading water circulation.
- • **Smart Pump Technology:** Experience seamless, self-starting filtration with real-time performance monitoring.
- • **Effortless Maintenance:** Say goodbye to heavy lifting—easy water changes with automated hose drainage.
- • **Precision Multi-Stage Filtration:** Stackable media baskets eliminate bypass for ultra-efficient mechanical, chemical, and biological cleaning.

## Overview

The Fluval FX6 is a high-performance canister filter designed for aquariums up to 400 gallons. It delivers an impressive 925 gallons per hour flow rate, powered by Smart Pump technology that continuously optimizes performance and self-starts for hassle-free operation. Featuring removable, stackable media baskets with 1.5 gallons capacity, it ensures multi-stage filtration with no water bypass. Compact at 21 inches tall, it fits under most tanks and simplifies maintenance with easy water changes, making it the ultimate choice for serious aquarists seeking pristine water quality.

## Description

Fluval FX6 is a high performance canister filter with many outstanding features designed to make aquarium fish keeping easier and more convenient than ever. This super capacity yet compact canister filter has a pump output of 925 gallons of water and has a filter circulation of 563 GPH, which both work to produce cleaner and healthier results. Filtering material can easily be placed in a removable stack of media baskets, which is at the heart of Fluval's multistage filtration. The baskets are precision-engineered to eliminate water by-pass, making filtration more efficient. The baskets can hold a total of 1.5 gallons of media and can be stacked in the precise combination of layers that will work best for your aquarium. Each one is lined with a foam insert for effective mechanical pre-filtering. Instant-release T-handles let you lift and separate the baskets quickly and easily, making routine maintenance simple. FX6 also features Smart Pump Technology, which provides optimum filter performance. This advanced technological feature employs an electronic circuit board that continuously monitors the pump. Impeller speed and force are constantly measured to ensure power output and energy efficiency. It also manages the filter's self-starting feature and evacuates air that may enter or build up within the filtration system. On a 12-hour cycle, the pump will pause and allow trapped air to escape, ensuring the best filtration efficiency. Only 21" in height, FX6 fits under most aquariums. Fluval first broke onto the aquatic scene in 1975 by introducing the world’s first 3-stage filter with synchronous motor technology. Since then, Fluval has built a legacy around this pioneering spirit, relentlessly adapting in a changing world to launch innovative aquarium products. 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: Worth the investment!! Don’t be scared to try it out! - If you were looking for a reason to get this filter like I was, LET THIS BE THE REASON!! This is one of the best investments I’ve made for my tank and I haven’t regretted it yet! Ive always wanted to try the fluval canisters but I’ve been too scared to invest SO much money into something that I wouldn’t know would REALLY work or not. I’ve always had filtration issues especially due to the fact that I have fish that make so much waste including a large turtle. For reference I have a 75 gallon and this filter is way more than enough to cycle that size. I do plan on upgrading to a 150-200 gal in the future once I finally move out of my apartment, which is why I decided to go ahead with the FX6 instead of the 4 for right now. So far again I am not disappointed, I haven’t had to deal with cloudy water, I’ve only really had to do surface cleanings on the sand and top my water off from time to time but other than that my water has never stayed clearer! Like other reviews have mentioned tho, I would try to place the intake horizontally if you have sand or any small substrate because it will suck it up! It’s not a major issue for me but I know for some people it might. The filter is also very quiet, and I haven’t had any issues with it ‘stalling’ or anything like that which I know is normal anyways if it does happen. It was also pretty easy to put together, I do have to admit tho I was a little confused on some of the directions but at the end of the day I ended up figuring it out lol. But yes again I would highly recommend, and I literally NEVER make desertcart reviews but I just wanted to come on here and give my opinion to someone who may be looking. DEFINITELY WORTH THE INVESTMENT!!! Do it for your aquatic babies! 💕🐠
Review: 10+ Years Going Strong - I've been using the previous version of this filter since April of 2015 without any issues with it. I have it setup for my 75 gallon which I think is the perfect amount of filtration for a 75 gallon to maybe a 125 gallon before you need to run duals. I have to clean the media only twice a year, so no big deal when I do have to do it & there are several options for media you can use in it. You will want to get the service kit for the motor & replace those bits along with the new gaskets in the kit to replace the old ones. Use a slight amount of silicone grease on the o-rings to help prolong life, but after 5 or 6 years you might hear the bushing in the motor start making noises anyways & that's when you need to get the service kit. I got the optional spray bar for the it & that is a worthy investment too & looks cool if you prefer a smoother outflow across a larger area. It's very quiet too unless the motor's bushing is bad, then it's noisy. The only real noise it makes when in perfect shape is the gurgle of bubbles escaping every 12 hours to purge the air that has built up inside the filter. Really nifty feature. It is a little pricey but it has been a very worthwhile investment for my tank & I haven't had any issues with it for over a decade of continuous running besides it being off for a few power outages & when I clean it out. Your tank & bio-load will be different than everyone else's, so it may take a little while to determine when to clean it, but general rule is when the outflow is really low or the impeller stops due to gunk buildup. Some may have to do it once a month, others maybe once or twice a year as I have to do. This filter has just been a real tank for me in the past 10 years so it gets an A++ from me.

## Features

- Multi-stage filter pumps out 925 US Gal (3,500 L) of water per hour, Smart Pump advanced microchip technology continuously monitors and optimizes pump performance
- Self-starting – just add water, plug in and Smart Pump will take over, trapped air auto-evacuated every 12 hours to ensure maximum efficiency
- Easy water changes eliminate need to lift heavy buckets. Simply attach hosing to output and Smart Pump does the rest
- Removable, stackable media baskets eliminate water bypass and hold a total of 1.5 US Gal (5.9 L) of media, all filter media included - mechanical, chemical and biological
- Compact 21 in (53 cm) tall design - easily fits under most aquariums

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00BJQ50HC |
| Best Sellers Rank | #7,038 in Pet Supplies ( See Top 100 in Pet Supplies ) #18 in Aquarium Filters |
| Brand | Fluval |
| Brand Name | Fluval |
| Color | Black |
| Customer Reviews | 4.6 out of 5 stars 3,459 Reviews |
| Flow Rate | 3500 liters per hour |
| Global Trade Identification Number | 00015561102193 |
| Horsepower | 41 |
| Importer Contact Information | Maple Pets International Pvt. Ltd., Indore, Madhya Pradesh |
| Included Components | Product in Descripton |
| Item Dimensions L x W x H | 20.87"L x 15.75"W x 15.75"H |
| Item Highlight | Canister Filter for Aquariums |
| Item Type Name | Fluval FX6 High Performance Canister Filter |
| Item Weight | 19.9 pounds |
| Manufacturer | Rolf C. Hagen (USA) Corp. |
| Manufacturer Part Number | A219 |
| Manufacturer Warranty Description | 3 Year Limited Warranty: The Fluval FX4/FX6 High Performance Canister Filter is guaranteed against defects in material and workmanship under normal aquarium usage and service for 3 years from date of purchase. |
| Material | Rubber |
| Material Type | Rubber |
| Maximum Lifting Height | 21 inches |
| Model Number | A219 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Packer Contact Information | Rolf C. Hagen., Italy |
| Power Source | Corded Electric |
| Product Dimensions | 20.87"L x 15.75"W x 15.75"H |
| Product Style | FX6 Filter |
| Specific Uses For Product | Indoor |
| Style | FX6 Filter |
| UPC | 015561102193 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Fluval
- **Color:** Black
- **Horsepower:** 41
- **Item Weight:** 19.9 pounds
- **Material:** Rubber
- **Maximum Flow Rate:** 3500 liters per hour
- **Maximum Lifting Height:** 21 inches
- **Power Source:** Corded Electric
- **Product Dimensions:** 20.87"L x 15.75"W x 15.75"H
- **Style:** FX6 Filter

## Images

![FX6 High Performance Aquarium Filter, up to 400 Gal. - Image 1](https://m.media-amazon.com/images/I/81hJp+8uzbL.jpg)

## Available Options

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

## Questions & Answers

**Q: How is the longevity of the FX6 compared to other filters people have owned? (primarily Eheim). I will be using it in a turtle tank if that matters...**
A: I've been using the Fluval FX5 on my 100 gallon red eared slider turtle tank for about 12 years now. It's worked flawlessly over the years. I'm about to replace it with the FX6 due to various things starting to get worn out. So yes it does have pretty good longevity.

**Q: I have a 40 gallon tank for two read eared sliders. Would this filter be too strong or just right for my tank? Also, does it come with the hosing?**
A: I've got it on a 55 gallon and it works fine! With turtles you want at least 3 times the filtration so 40 gallons of water needs a 160 gallon rated filter or stronger. Also it is recommended that you house your turtles separately as they are going to grow to be 8-12 inches long and are solitary in the wild! I recommend you join red ear slider turtle owners resto group on Facebook and they will have all the information on best diet best filters and best tanks for your turtles!

**Q: I am sitting up a 75 gallons tank in my office i don't want to clean it a lot what fluval pump would you suggest**
A: Frequent water changes aren’t a necessity if you set your tank up accordingly. Look up low maintenance/ self sustaining and see for yourself. I have a 75, 50, 29, and two turtle tanks, turtles being the the only ones I regularly change water. No deaths, plants are healthy(NO SUPPLEMENTS OR CO2 added), water is clear, and I’m using HOB filters with only ceramic balls. There’s guides for what you want online that will help far more than these comments.

**Q: Fluval fx4 or fluval 406? 80 gallon planted tank. what do you think?**
A: If you have a heavy stock of fish I would aim for 7-10x total gallons of filtration. 
Currently running 2 fx6 on my 260 gallon which is about 7x flow rate and I’m debating adding a third to get closer to that 10x mark.

These provide great bio filtration and if you set them up right with some tweaking can agitate the surface of the water which increases oxygen in the water and allows more life to exist in your aquarium.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worth the investment!! Don’t be scared to try it out!
*by M***N on September 15, 2026*

If you were looking for a reason to get this filter like I was, LET THIS BE THE REASON!! This is one of the best investments I’ve made for my tank and I haven’t regretted it yet! Ive always wanted to try the fluval canisters but I’ve been too scared to invest SO much money into something that I wouldn’t know would REALLY work or not. I’ve always had filtration issues especially due to the fact that I have fish that make so much waste including a large turtle. For reference I have a 75 gallon and this filter is way more than enough to cycle that size. I do plan on upgrading to a 150-200 gal in the future once I finally move out of my apartment, which is why I decided to go ahead with the FX6 instead of the 4 for right now. So far again I am not disappointed, I haven’t had to deal with cloudy water, I’ve only really had to do surface cleanings on the sand and top my water off from time to time but other than that my water has never stayed clearer! Like other reviews have mentioned tho, I would try to place the intake horizontally if you have sand or any small substrate because it will suck it up! It’s not a major issue for me but I know for some people it might. The filter is also very quiet, and I haven’t had any issues with it ‘stalling’ or anything like that which I know is normal anyways if it does happen. It was also pretty easy to put together, I do have to admit tho I was a little confused on some of the directions but at the end of the day I ended up figuring it out lol. But yes again I would highly recommend, and I literally NEVER make Amazon reviews but I just wanted to come on here and give my opinion to someone who may be looking. DEFINITELY WORTH THE INVESTMENT!!! Do it for your aquatic babies! 💕🐠

### ⭐⭐⭐⭐⭐ 10+ Years Going Strong
*by S***E on October 31, 2025*

I've been using the previous version of this filter since April of 2015 without any issues with it. I have it setup for my 75 gallon which I think is the perfect amount of filtration for a 75 gallon to maybe a 125 gallon before you need to run duals. I have to clean the media only twice a year, so no big deal when I do have to do it & there are several options for media you can use in it. You will want to get the service kit for the motor & replace those bits along with the new gaskets in the kit to replace the old ones. Use a slight amount of silicone grease on the o-rings to help prolong life, but after 5 or 6 years you might hear the bushing in the motor start making noises anyways & that's when you need to get the service kit. I got the optional spray bar for the it & that is a worthy investment too & looks cool if you prefer a smoother outflow across a larger area. It's very quiet too unless the motor's bushing is bad, then it's noisy. The only real noise it makes when in perfect shape is the gurgle of bubbles escaping every 12 hours to purge the air that has built up inside the filter. Really nifty feature. It is a little pricey but it has been a very worthwhile investment for my tank & I haven't had any issues with it for over a decade of continuous running besides it being off for a few power outages & when I clean it out. Your tank & bio-load will be different than everyone else's, so it may take a little while to determine when to clean it, but general rule is when the outflow is really low or the impeller stops due to gunk buildup. Some may have to do it once a month, others maybe once or twice a year as I have to do. This filter has just been a real tank for me in the past 10 years so it gets an A++ from me.

### ⭐⭐⭐⭐⭐ Send it!!! You won’t regret it.
*by C***Y on October 1, 2025*

Ive been running the Fluval for about 3 months now, and I am absolutely OBSESSED with its quality. I have a 75 gallon tank with a turtle and pleco (both produce A LOT of waste). Previously I was a die hard Penn Plax Cascade fan for the last 5 years, but my last two had motor failures and they changed their warranty terms finally, so I decided to switch it up. Long ago I wanted a Fluval, but but the price was steep so I settled for less and let me just say it’s the best investment you can make. It’s quiet (don’t know why other reviews say it’s not unless they are keeping their water levels really low), my tank remains crystal clear with my normal monthly maintenance routine, and it is easy to clean and change out my media. The fasteners are really not that complicated and don’t take that long to unlock like other reviews say. The canister itself is designed so that it is air tight and I’ve had no signs of leaking. The outtake is made so you have two options to direct the flow of your water which is helpful if you have a basking platform above half of your tank. Highly recommend.

## Frequently Bought Together

- Fluval FX6 High Performance Aquarium Filter, Canister Filter for Aquariums up to 400 Gal.
- Seachem Matrix, 4 L / 1 gal.
- Seachem Indoor Purigen Organic Filtration Resin - Fresh and Saltwater 100 ml

---

## 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.pt/products/2858693-fx6-high-performance-aquarium-filter-up-to-400-gal](https://www.desertcart.pt/products/2858693-fx6-high-performance-aquarium-filter-up-to-400-gal)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-10-02*