Fluval FX6 Canister: Is It Really Worth It? Full Review

Searching for an aquarium filter that would end your stress and struggles? If so, then the Fluval FX6 canister filter is the top choice. This unit is specifically designed to afford you a clean and clear tank, much to the delight of your fish. Keep reading and we will provide you all the information and knowledge needed about FX6 canister filters. how they are used and how they are different from others in the same price range.

You’ll be glad to know that we have done thorough research to assist and help you in this matter. In this article, we are going to review the machine by going through its features and benefits, as well as its downsides. But before we get started, let’s see how the FX6 filter and its predecessor compare.

 What Are Canister Filters, and How Do They Work?

Canisters filters are a type of aquarium filter designed to suck out water from the aquarium via a tube and filter it in a canister outside of the aquarium. Once the filtration process is done, the water is returned to the fish take through a spray pipe. 

A canister filter is an outer chamber containing different types of filters like chemicals, bacteria, and other harmful toxins that push aquarium water through itself with the help of gravitation and rotor fixed inside the canister. Filter canisters operate on the law of pushing out water from the aquarium through an intake and return.

It consists of three essential parts like cartridge, motor, and tubing. The main chamber is a cylindrical device containing different kinds of filters we discussed early and the pump. Canister filters are placed outside the aquarium but connected with the two hoses, the inlet, and the remit. Energy is not required for water to flow here and there, as the hoses act as a funnel. So in this type of aquarium filter, the water is to be pushed through a filtration channel where the pump is being utilized.

As we have already discussed above, the size of the chamber depends on the size of the tank they’re using and is usually located near the aquarium. These filters catch the eye of many people because of the way the main chamber doesn’t meet the fish tank water. The tubes of canister filters are connected through the water source.

How Can a Canister Filter Operate?

The canister filter works due to the pump out of the water from the intake and return. Siphoning (pump-out) can be described by creating a line of no hurdles between two bodies of water. With the help of siphoning water can move freely, quickly, and in every possible direction without the use of the pumps.

Once the water enters the canister of the main chamber, it is forced by the pump through which water gets pressurized through another side of the chamber and the filtration media. Then the water is pushed back to the return into the fish tank.

You can modify the Filtration channel according to your needs, and the filters types suit the aquarium’s needs.

Differences Between Fluval FX6 And The Fluval FX5 

The Fluval FX6 canister filter is much more powerful compared to its predecessor. It comes with a biomass filter available in the set, which is a significant improvement compared to the FX5.

The Fluval FX6 upper lids are redesigned to give you a strong fitting against the pressure on the filter body making it more convenient. The lid has 2 spinning blocks with 12 parts on a much higher scale, they are made for making marks and reminders on the tank and also carry out maintenance.

Now you can have a record on the filter to notify when you renewed your tank water or maintained your FX6 filter last. Heat generated by any equipment is generally due to the amount of energy consumed. Fluval FX6 filter users supply 20W more heat.

Fluval FX6 High Performance Aquarium Filter, Canister Filter for Aquariums up to 400 Gal.
  • 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


  • Efficient water filtration
  • Sturdy construction
  • Low maintenance requirement
  • Comes with bio-filter
  • Affordable price


  • A bit noisy at the onset

FX6 Filters

Fluval filters are a type of filter which purifies water deeply–even if the smallest particles won’t go through the Fluval filter. Because of the latest technology used by Fluval company, it is specially designed to provide you crystal clear and clean water and provide the fish environment for long-lasting and healthy life. You may be thinking, how does a Fluval filter work? So basically, in a Fluval filter, the water intake valve will draw water downwards to the rear end of the canister. Firstly, the filter will haul it up the media trays filled with the coarse filter sponge.

Why Are FX6 Filters Used?

As we discussed earlier, FX6 filters are designed for aquariums. They are designed to make sure that water is clear, clean, and healthy for fish. Fx6 filters are used in aquariums so that fish can breathe fresh oxygen and be more lively. The purpose of FX6 filters is to provide new and clean water to fish and give a good and happy environment for different kinds of fish. 

The Architecture of FX6 Filters

So, now let us discuss the architecture of FX6 Fluval filters, what kind of material, and what things are included in Fluval FX6 filters with innovative pump technology. Out of the box, it contains 1 Fluval fx6 filter, 2x trays,2x bio-foam, 3x filters, one carbon foam, one intake, one small house, one large hose, 2x biomass, 2x pouches, two metal clamps, flow clamps, and output nozzle.

Why Choose FX6 filters?

Gold Fish, Fish, Aquarium, Underwater, Animal, Pet

We chose FX6 Fluval filters because it has the latest chip, which uses patented microchip technology that continuously monitors and boosts pump performance, auto-start self-priming, quiet operation, and energy efficiency. It contains multi-stage filters that produce healthy aquarium water, freshwater, and marine aquariums. It can store up to 400 gallons of water in it. It includes a smart feature of a self-starting filter. Add water to it and enjoy. Contains head height of 3.3m equally to (10.8) feet.

How Long Does a Fluval FX6 Filter Last?

Well, this is a good question. Everything in this universe has a lifespan from the start till the end. So the first thing you need to know is that every tank with an FX6 Fluval filter is different. Fluval FX6 is available in various shapes and sizes depending upon the requirement. There are multiple models of Fluval canister filters. Every one of these comes with its unique maintenance requirements. Some may require constant care, while others can be used for six months without any problem.

How Often Should One Need to Clean a Canister Filter?

Canister Filter – A circle type of filter, canister filters can go the longest between sponges – they may only need to be washed every three to four months. It also depends on the usage of the filter. If your fish tank tends to get dirty fast, it will need to be cleaned more often don’t thus the filter media must be replaced and the canister cleaned. 

Reasons The Aquarium Filter Gets Dirty Quickly

The size of your aquarium should be appropriate. You should consider the number of fish in the aquarium and their habits. If they do not have enough space to move about, they will be stressed, and the fish tank will need to be cleaned more frequently. On the other hand, if there is too much space in the tank, the fish would be uncomfortable as well. The key is in the balance, and you should also consider adding species that eat algae (which helps keep the tank clean).

Which Type of Filter Is More Important for Aquariums?

Biological Filtration is the most critical filtration process for the aquarium. Though it doesn’t involve filtering anything out of the tank water, this type of Filtration makes it possible for harmful poisonous toxins and hazardous chemicals to be removed from the tank.

It also makes the water odorless and discolored and provides a lively medium for fishes.

Why We Think FX6 Fluval Filtration is the Best System

Goldfish, Fish, Aquarium, Underwater, Fishbowl, Water

Because it is always essential to choose a good filter for your aquarium and why it is that, so let me tell you why a suitable filter like the fx6 Fluval filter is essential. Because when it comes to neat, clean, and freshwater aquarium filters, you should always choose a filter with three stages to purify water like mechanical, chemical, and bacterial. Good quality filters always consist of these three basic filters like the fx6 Fluval filter needed for good quality water and healthy and happy fish.

The pump within the Fluval FX6 assimilates an electronic controller that constantly monitors its impeller speed and force outrun. Thanks to this monitoring device, the pump can diagnose when the air has built up in the system and can spontaneously pause once every 12 hours to allow trapped air to escape.

What Kind of Material Does the FX6 Filter Use?

So basically, the fx6 filter is made of all suitable hard plastic. The plastic sheet is made of several different materials, which are good quality, making the fx6 filter long-lasting and durable. It also comes in different shapes and sizes, depending on the customer what kind of size they need. Filters can also be made according to the requirements of the customer. You can also say that you can customize filters that cost you more than an average Fluval filter.

How Many Volts Is Required to Use the FX6 Canister Filter?

The fx6 Fluval canister filter is mighty and a very easy-to-use external filter consisting of a tremendous volume. The performance of this filter is very excellent. According to the company, the company claims that 20 liters are filter volume, 5.9 liters of biological filter volume, pump force is 3500 I/h with 41 w of voltage power consumption for fish tank up to 1500 liters services.

Dimensions of FX6 Canister Filter:

The measurements of the Fluval fx6 canister filter are probably 15, 15, 20 inches. While, if we measure it, it weighs 19.9 pounds. It might seem a bit for you guys if you are not easy or comfortable with giant fish tanks, but this is not a big deal. You should know the dimensions of the fx6 Fluval filter before buying according to the adjustment of your fish tank.

Features And Benefits

Now that we’ve gone over the basics, it’s time to understand everything we found out from Fluval FX6 reviews.

Easy Starting

Starting the Fluval FX6 canister filter isn’t a problem when one follows instructions. Once you have read it, everything becomes very obvious. If you already have filter experience, then the main thing about this filter is to remember that it is very important to pour about 8 – 10 liters of water into it before starting, otherwise, it won’t start and the pump may be damaged.

It is easier and more convenient to pour water when it’s open at the installation stage of containers with fillers.  The filter hose is a very thick one, which explains why it’s necessary to allow some airspace between the wall and the tank to avoid a situation where the hose can’t be brought between the tank glass and the wall.

Durable Construction

The build quality of the Fluval FX6 canister filter makes it highly durable. Although it lacks foam plastic, the filter body is made in such a way that it won’t do any harm to the box no matter how the filter is handled. The plastic used for the filter body is quite soft but that does not denote fragility, which is very good. The packaging has simple and understandable markings on it, which gives the buyers enough clue about the parameters of the filter.

Easy To Use And Maintain

One of the features that makes the Fluval FX6 stand out amongst other filters is the location of its pump beneath and from outside the filter body. This makes maintenance very easy. Another distinguishing feature is the fastening system of the upper lid. There are six clips that closely press the lid to the filter body and they are very easy to use.

It may also interest you to know that the pump of the machine is always filled with water to avoid it from running idle. This ensures that water bubbles in the filter won’t lead to increased noise or filter breakage in cases where the air content is large. With Fluval, water changing is quite alleviating, no need to lift heavy buckets. Simply affix hosing to output and leave the rest to the smart pump.

The noise level of the filter is really nothing to worry about. This doesn’t mean that the machine doesn’t produce any noise, instead, it implies that the noise is quite minimal. So for people who can’t deal with the little noise, we strongly advise against having it in the bedroom. With continuous use, the machine will eventually become quiet.

Improved Smart Pump Technology

This unit comes with an improved smart pump technology, which provides exceptional and outstanding filter performance. It possesses an electronic circuit board that controls the pump continuously. It also controls the self-starting filter feature, removes air that may enter or store up inside the filter system.

Within a twelve-hour cycle, the pumping stops to allow trapped air exit. Ensuring the best filtration efficiency at all times.

Efficient Water Filtration

As for the quality of water filtration the Fluval FX6 canister filter stops at nothing but providing clean and crystal clear water upon continuous usage. It also has the capability of absorbing liquified impurities and dyes. It has a removable and stackable media basket that eliminates water bypass and can hold a total of 1US gal (3.9l) of media. The unit should be able to fit under most aquariums with an exception

Fluval Fx6 canister filter reviews

Now, we are going to provide you customer reviews about Fx6 filters. What were their experiences, and if they liked them or not?

Moreover, when buying any product, whether a remote car or any home appliance, we humans always rely on other people’s reviews and recommendations.

Here are some honest reviews of customers who used fx6 canister filters.

Customer number 1: (Bonbon)

Bonbon from the United States quotes that “I have used these filters for four years without any problem and difficulty. Firstly, I ordered fx4 four years ago. It was amazing. After four years I wanted to buy the latest version that’s why I again called it with confidence. The Fx6 canister filter proved to be the best one for my fish tank. I have been keeping fish for more than 25 years now, and I am more than happy with canister filters. I would highly recommend to those who need filters for their fish tank to buy it.

Customer number 2: ( the angler)

Someone named “the angler” from the United States Quotes: “I had used the Fluval fx6 for years, that is why I wanted to move to the next one. I ordered it again with confidence and somehow got disappointed by the packaging of it. The parts of the filters were not properly attached. And I can’t send those back. However, my overall experience with Fluval fx6 was not good. 

al and outstanding height of just 21 inches.


Frequently Asked Questions

1. What is the capacity of the FX6?

The Fluval FX6 canister filter can handle a 220-gallon fish tank. With proper maintenance, the filter should last you a long time.

2. What kind of voltage is suitable for it?

The Fluval FX6 canister filter uses 120 volts. To use on a higher voltage, a converter will be needed.

3. How does the water go through?

It pulls water from the top of the tank to the bottom of the canister. Then it filters through the media to the top of the canister back into the tank.

4. Will it fit plumbing done for FX5?

Yes, Totally! The Fluval FX6 hose size matches the same as the FX5. So there’s no cause for alarm.

5. Does it come with filter media?

Definitely! The FX6 canister filter comes with filter media. But it is also possible to use any media of your choice.

Final thoughts about fx6 filter product

So after a detailed search on this fx6 Fluval filter, we are sure that we have cleared your doubts relating to this product. This product is the best because of its uniqueness, durability, quality, and long-lasting effect. We have removed all your ambiguities about this product. This product is not that cheap but will give you mental and physical satisfaction after buying it. After purchasing this product, we assure you that you will be happy, and this product is a life changer product that can solve lots of problems at once for your fish tank as we give you very detailed information about this product. This product is worth more than any other filter. Now the decision is at you to choose a simple and easy way to treat your fish tank or do it the hard way by buying a different kind of canister rather than an fx6 Fluval canister filter.

 It is unique in the market and beat most of its competitors after launching this product. Because of its intelligent microchip technology, which gives you smart pump features with multi-stage filter pumps, which make this product unique from other products, after deep research of comparing these fx6 Fluval filters with different brand filters. We recommend you to buy these fx6 filters because they are worth buying and give you a sense of mental peace. So we should guide you through purchasing these filters.


Hopefully, we have answered your questions on whether Fluval FX6 is a reliable aquarium filter or just a simple hype. It’s no wonder most Fluval FX6 canister filter reviews are positive. 

Rest assured the Fluval FX6 is one of the most efficient filters one could get, with its high rating across the internet as well. This aquarium filter will give you a superb and enjoyable aquarium.

If you loved the information provided in this article, do share with your family and friends. Still, if you have any confusion or questions bugging up, ask away.

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