Fluval Canister Filter, FX6 Filter (400 Gal) Review

Review of Fluval FX6 Canister Filter: Aquarium Pumps and Filters Accessories

Value for moneyEase of useQuality of buildFeatures
If you are looking for an upgraded, reliable and powerful canister filter that will keep your aquarium pumping, the Fluval canister filter will be worth every penny you spent on it.It is a self-priming system that allows for an easy and smooth starter.Built-in to last, this FX6 model is a compact design that can fit most aquariums.The Fluval canister filter comes high-quality features that will make everything go smoothly and the way you want it.
  • High Capacity canister filter with Smart Pump Technology
  • A quite almost noise-free operation
  • An easy maintenance process
  • A Self-starting prime system
  • Expensive
  • Quite heavy

Summary of the review:

If you are looking on the market for canister filters that are worth both your time and money, then the Fluval canister filter must be on top of your purchasing list.

Built-in with a Smart Pump Technology, this filter is as close as it gets to your ideal choice. Unlike the previous Model FX5, this new model is upgraded with high-quality features making it earn its place as the ultimate powerful filter. The Fluval canister filter will make your life much easier with its self-priming starter system and noise-reduction operation. Despite its expensive price, the filter keeps your water tank healthy and pumping for its occupants. The directly accessible media baskets and the strong filter media also make this a worthwhile investment. Now, let’s dive deep into the Fluval FX6 canister filter review, and why it is a top notch filtration system.

The Fluval FX6 high-performance canister filter is an upgraded version from the previous canister filter model FX5. While filling in for the prior existing gaps, this new reliable model is a multi-stage filter that is designed to ensure the freshest and clearest water.

It offers an upgraded and improved execution and most importantly a simplified yet optimized pumping operation for smooth water flow. This new design features a high-efficiency motor that uses less energy than the previous FX5 model. With such undertaken improvement, this Fluval Canister filter is exactly what you need for your Aquarium.

Who is this product for?

The canister provides the perfect solution for people who use marine Saltwater aquariums that goes up to 1500 L measuring around 400 gallons of water in US terms. While it fits under most aquariums out there, the canister filter is about 21in. high, which offers a greater choice for the vast targeted audience.

One thing you should note is that this new upgraded model is a bit on the expensive side; therefore if you are only looking for an affordable and simple pumping machine system, this is not for you.

What’s included in the package

Apart from the things that we have already mentioned, here are some extra accessories that that come with this product:

  • Pump unit and power cord
  • Intake stem
  • The multi-directional and adjustable output nozzle
  • Purge valve and drain hose for effortless maintenance
  • Suction cups and rubber feet
  • Convenient valve and drain cap
  • Media baskets and packs

Feature Overview

In this section, we will briefly go throughout the different features offered by the Fluval FX6 Canister filter. These might make you decide on this being the perfect aquarium filter for your fish tank, or something else entirely!

High Capacity

It goes without a doubt that the first feature to highlight when it comes to the Fluval FX6 canister filter is its endorsed high capacity. Don’t let its size fool you. Despite being only 21in. high, this canister filter has earned its name thanks to the large delivering capacity it can provide for its users.

The canister is largely used for huge aquariums and large tanks that hold up to 400 gallons capacity. With such superior performance, the canister is capable of filtering up to 900 gallons per hour making the whole process much easier. You’ll also find it to be very rewarding to use, with the high rate of water per hour and with its usability as an aquarium filter.

Quite Noise-reduced of Operation

Another great feature that makes this canister everyone’s favorite is its quiet operation procedure. The Fluval FX6  works in almost silent mode. You can only notice or hear some sound if you get close enough to it.

But again, in comparison with other models, this built-in quite motor is ideal to keep your space quite the entire filtering operation time. Not only that, but the FX6 canister model is designed with a decreased level of vibrations.

Multi-directional filtration Output

When designing the Fluval filtration system, the manufacturer has incorporated adjustable filter media baskets and output nozzles to ensure the efficient coverage and adequate distribution of filtered water inside your tank. This provides a worry-free solution of unfiltered and dirty water moving back and forth within your tank with a smooth water flow as well. 

System Monitoring

To ensure a maximized filtration output when the product is operating and the electronic circuit board is installed to monitor the system. This monitoring happens at both the level of power pumping and speeding impeller. This installed board will ensure a consistent and effective working condition of the system.

For example, if the impeller gets blocked, the motor will automatically be turned off

Self-starter system

The FX6 model provides a self-priming starter system, which is made to fill the filter with water prior to the filtration process, all by itself. One thing you should note is that you have to give it a few minutes to self-start. Other than that, it completely excludes any kind of manual siphoning.

How to install/ set up a Fluval Canister Filter FX6?

Now, setting up a canister filter may sound like a daunting task. However, it is not the case with the FX6 model. Thanks to its self-priming starter system, installing and setting it up is an incredible and easy process. You will be provided with detailed instructions on how to do so. The only part you will have to worry about is the cutting of the tubing length.

Therefore, make sure that you have the right measurement. You don’t want to cut it either too short not too long, maybe somewhere it can perfectly reach your tank.

For further details, check out this video:

Maintenance wise, the aqua stop valves will provide a means of safety by allowing you to avoid damaging your filters without having to even stop the water flow.  This makes the filter maintenance much easier for the Fluval FX6. 


As far as canister filters go, the Fluval FX6 Canister filter is indeed the best to use out there. Thanks to its superior performance and high capabilities, it has proven itself as the ultimate filter that will meet your needs. If you want to experience the different features and qualities it offers, don’t miss it out and try it yourself.

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