For individuals who are serious about aquarium management, efficient filtration is essential for maintaining the best and most beautiful aquarium setups.

Although hanging power filters are quite popular among aquarium experts, some configurations with higher needs, such as planted and marine tanks, necessitate a high-efficiency filtering system. Canister filters enter the game at this point.

In your aquarium, getting one of the top canister filters might spell the difference. The filters will keep your tank clean and fresh, and you will also have satisfaction by knowing that your fish and plants are in a clean and safe habitat.

When it comes to products, there is always a challenge that comes free with it- which is the most efficient product or which one is the best, and how should I choose the product. These are even more significant when your aquarium lives are at stake.

That’s why to help you out from your dilemma, we have tried and tested numerous canister filters for your aquarium to find the ones that are most efficient in their department. And we did find some of the most amazing canister filters.

Among them, we found OASE Indoor Aquatics Biomaster to be the best aquarium canister filter. We have also included nine more amazing canister filters in this list to provide you with more options and designs.

So, without any further ado, let’s jump right into the list.

10 Best Aquarium Canister Filters- Reviewed

All the products mentioned here are available online on

OASE Indoor Aquatics Biomaster

Product details:

  1. 4-stage filtration
  2. 13′ Tubing
  3. 6′ Power Cable

This is most likely the best filter I’ve used in the last 20 years of fishkeeping. This filter’s upkeep is really simple. With a simple twist of a lever, the prefilter is removed. It can be cleaned with either tank water or running tap water.

Also, there is a lot of room for media in this. They sent a lot of media with it, but you can use any material you like. This is done on a 40B that holds a batch of ten Peckoltia. They eat a lot and quickly pollute the water. This filter handles it all with ease.

This filter, with its easily removable prefilter, is a game-changer in the business. You don’t have to disassemble the entire filter to clean it. Many individuals utilized separate prefilters on their canister filters in the past, but those days are gone.

You can easily remove the prefilter without opening the main body of the filer and simply rinse off the sponges in tap water as it is your prefilter, and you are not touching your main body that contains all of your biological media while doing your weekly water changes.

What we like:

  1. Integrated heater room
  2. Excellent design

What we dislike:

  1. A bit on the expensive side

Fluval 07 Series Performance Canister Filter

Product details:

  1. 145 – 383gph
  2. Ultra-quiet operation
  3. Reduced energy consumption

I have been in the fishkeeping field for 20 years now and have used Fluval products before. Even now, I have 5 of them running in some of my aquariums. Honestly speaking, I have been impressed by most of the Fluval products.

This Fluval product is no different; rather, it is even more efficient than its previous models because of its enhanced design and latest tech tweaks involved. There are some amazing additions to this model, along with the usual functions.

They strengthened the bottom corners of the canister to make it more robust, and they upgraded the aquastop valve opening mechanism. The impeller cover appears to be fairly efficient.

The new pull-out for the media baskets is convenient because they all come out and back in simultaneously. The filter is noticeably quieter than prior models; it is extremely quiet but not completely silent.

It is a fantastic choice if you put up a fresh tank and do not have a filter. As previously said, these filters have a long history, and with each successive generation, they have become more powerful, reliable, easy to maintain, and quieter.

What we like:

  1. Pull-out for media
  2. Very sturdy

What we dislike:

  1. Quite expensive

SunSun 5-Stage External Canister Filter

Product details:

  1. 5-Stage filtration
  2. 150 gallon
  3. 525 GPH

This canister is fantastic. This device was a snap to put together. Within 35 minutes, I had this up and running. Fill with your preferred filter media – mechanical filtration in the bottom tray, biological, chemical if needed, and a polishing pad if desired.

I have to stretch the perforated return tube to reduce/distribute the water flow. Trays do not wedge into the body. Huge cubic space for bio, chemical, mechanical, and other additives. Primed right away. Very quiet, especially for its size.

The UV has a power switch, but the motor does not. The tubes are stiff and sturdy, as they should be, but this makes them difficult to deal with when connecting them behind your tank. Soaking them in hot water softens them and makes them much simpler to deal with.

I’d recommend avoiding utilizing the UV lamp for at least the first week while setting this up for the first time. That way, you may cycle your tank with the new media to build up some friendly bacteria, and then when you’re satisfied it’s cycled enough, you may turn on the UV bulb.

What we like:

  1. High filtration rate
  2. Fits the budget perfectly

What we dislike:

  1. Less options for adjustments

Aqueon Quietflow Canister Filter

Product details:

  1. 155 gallons
  2. Quick disconnect valves
  3. Water polishing unit

This is another fantastic product. I’ve been running it on my 55-gallon tank for a few days now, and it removes every particle. The flow is incredible, and the water polishing devices are a brilliant idea that works well. This is one of the best canister filters.

I strongly advise you to use the water polishing equipment. It’s an excellent method to make maintenance easy while also improving flow. Also, the canister is quiet and comes with so many accessories that you won’t need to buy a spray bar or anything else.

The unit itself works quietly, and the flow on the spray bar is adequate, not weak as with many filters. I was shocked by how tall this unit is – the canister is more elevated than any I’ve used before, and it just about fits in the nook under the tank with room to maneuver.

My only concern is that when you remove the valves to clean the filter, water remains between the valve and the screw that holds the filter in place. That water comes out as you undo the nut. It’s not much, but it’s enough that you need to soak it up with a towel.

It’s inconvenient, but it’s not a deal-breaker.

What we like:

  1. Well built
  2. Quiet operation

What we dislike:

  1. Not long-lasting

Cobalt Aquatics 26000 Ext Canister Filter

Product details:

  1. 5/8” hose barbs
  2. Removable media trays
  3. Inline pump

The most innovative canister filter I’ve ever used. When compared to the competition, the device is priced in the low-middle category. The included goods’ quality varies greatly. The canister itself is extremely durable, having a solid feel and a powerful top latching mechanism.

The device is relatively compact. The four media baskets are reasonably sturdy, but the lift strap is made of a strange rigid plastic substance that isn’t flexible enough to tuck out of the way when stacking baskets.

When stacking, I enjoy how you can rotate the baskets to any position. The inlet and outflow accessories that come with the unit are inexpensive. They are also fairly huge and can accommodate a large amount of media, which is supplied.

The sponge is good and thick, so it should endure for several cleanings. My kit included a coarse sponge for the bottom layer, pellet carbon for the next layer, a big number of ceramic rings for the third layer, and a handful of loosely spun floss for the top.

What we like:

  1. Inline pump
  2. Excellent filtration

What we dislike:

  1. Does not include a spraybar

Eheim Pro 4+ Canister Filter

Product details:

  1. 48-90 gals
  2. 16 watts
  3. Made in Germany

This filter is nearly half the size of the previous one. It’s easy to transport; if you’ve ever owned a 304b, you’ll know that raising the filter by the latches causes them to pop out, making it difficult to transfer.

Eheim put a plastic ledge on which the latch sits so that when you take it, you’re not holding the latch and can lift it easily. The bottom tray has two medium/fine sponges and a Polish pad, while the top two trays are filled with a matrix.

The hoses were simple to install, and the overall design of this filter is more streamlined and basic than the Sunsun. Every piece is precisely fitted together, and inconsistencies are easily identified and corrected.

I like the intake because it’s easy to conceal, and I covered the grate with a mesh cover for my baby fish. Overall, it’s thinner in every manner than most of the other filters while being far more powerful. With this filter, the premium you pay for an Eheim is well worth it.

What we like:

  1. Durable
  2. Quiet operation

What we dislike:

  1. Premium price

EHEIM Classic External Canister Filter

Product details:

  1. Permo-elastic silicon sealing ring
  2. 66 gallons
  3. Filter sponges

One of the best canister filters on the market. For over 20 years, I’ve been keeping aquarium plants and fish in various setups, including CO2, high-tech lighting, plant-friendly substrate, and so on. This is my favorite canister for ease of use and performance.

The Eheim brand has been around for a long time and is well-known. Media is maintained in an inside basket with a handle, making it easy to remove and clean media. The unit is quite quiet, with only a tiny hum.

For larger tanks, there is a lot of flow. It would be ideal for a 20-mile run. To control the flow in my 10g scape, I have to use a spin lily pipe. The double-tap couplings make it simple and tidy to separate hoses. It includes a bio medium, a thick, coarse sponge pad, and a black carbon pad.

It’s simple to put together. In less than 15 minutes, I had it out of the box, media washed, constructed, and going on my tank. It did help, however, because I was already familiar with Eheims.

It would probably take approximately 20-30 minutes for a canister newbie to read through the 15-language instruction booklet and get your hoses cut and attached.

What we like:

  1. Inlet and outlet
  2. Extremely quiet

What we dislike:

  1. Design is very boring

Fluval FX High Performance Canister Filter

Product details:

  1. 400 gallons
  2. Multi-stage Filter
  3. 19.9 Pounds

Fluval, in my opinion, makes some of the best filters, which are completely silent when properly maintained. They do an excellent job of keeping my tank clear. They are enormous. I have them on various cleaning schedules so that I don’t mess up the tank’s cycle.

I’m not too stocked, and I clean them every three months. I just used one of the given black foams on each and chose to utilize extra ceramic media. This filter performs an amazing job of keeping the water parameters in check.

The little rubber pads that came with the filter were insufficient to keep the filter from producing a low-frequency vibration, which caused the entire cabinet to emit a very unpleasant hum.

The filter itself is fairly quiet, but the fact that it was resting in a hollow cabinet allowed the conditions to develop. The filter does not contact the cabinet’s sides or the hoses, so I knew the filter feet were the only point of contact.

What we like:

  1. Excellent for large aquariums
  2. Adjustable valves

What we dislike:

  1. Quite expensive

Hydor Prime External Canister Filter

Product details:

  1. Coarse Mechanical Pad
  2. 40 to 74 gallons
  3. Sintered Quartz BIO-Rings

This is a relatively affordable product but at the same time quite an expert in the market. This filter is quite simple to set up. Open the packaging and place all filter parts and bio bits in the trays (wash them off).

Insert the trays into the filter and close the lid. Place the filter beneath the tank, then measure and cut the water tubes and connect them to the filter and the intake and output components.

It’s peaceful. It’s quite silent. Because it was so quiet the first couple of days I had it running, I had to peek to make sure there was water coming out of the output nozzle. It’s really powerful and can handle a large amount of water. Because it was so intense, I had to turn it down.

It’s incredible how well it filters and cleans the water. Canisters, as opposed to traditional carbon filters, are biological filters. You can now put carbon in this filter, but only for a limited amount of time.

You’ll be amazed at how clean the water becomes when you get the device running and run a good nitro cycle.

What we like:

  1. Quite versatile
  2. Adjustable settings

What we dislike:

  1. Louder than others

Marineland Magniflow Canister Filter

Product details:

  1. 100-Gallons
  2. 3-Stage filtration
  3. 160 GPH

It is unquestionably worth the money. The setup and maintenance are quite simple, and the upkeep becomes easier and easier as you become accustomed to the machine. My water is well-filtered, and this canister is quite silent; you can barely hear it.

One important tip: Check the connections on the top of the canister carefully; if you move the hoses around, they can become loose, and make sure they aren’t twisting in different directions, or the connection at the top of the canister will not be snug and could come undone.

It took me around 90 minutes to set up. The most difficult aspect was priming the pump (correctly). I think I spent approximately 20 minutes doing that and getting the air out of the system. A little sloshing and tipping of the unit typically help with trapped air.

Fill the unit nearly full of water before final assembly. Allow the filter material to soak for a few minutes to allow trapped air to escape before shutting it up. This device has plenty of space for filter media. All of the media required for the initial setup is provided.

What we like:

  1. Auto shutdown feature
  2. Quiet operation

What we dislike:

  1. Cannot adjust the flow

How to Select the Best Aquarium Canister Filter- Buying Guide

We’ve compiled a list of excellent canister filters for you to consider. So the query is, which one is best for your aquarium? Let’s speak about the elements that will influence our decisions.

Size of your aquarium

Your tank’s size is an important consideration in your choosing an aquarium filter. You should estimate the available space in your tank setup to check whether the filter you select can conveniently fit your tank.

For large tanks

This is important as if the pump is small for your tank, then it will not clean your water properly or, in another case, might take a long time to clean the whole tank.

For a large tank, Fluval FX High Performance Canister Filter can be conveniently considered as a perfect choice. The Fluval FX is a highly efficient canister filter with many characteristics that make aquatic life care hassle-free, safer, and more efficient than ever before.

This high-capacity, affordable canister filter has a pumping capacity of 925 gallons of water and a filtration rate of 563 Gallons Per Hour, all of which contribute to better, richer, and more hygienic outcomes.

You may conveniently install filtering media in a disposable layer of spray trays, which is key to Fluval’s multiple-stage filtration process. The trays have finesse and efficiency to minimize missing out on particulates, resulting in high-efficiency filtering.

For smaller aquariums

On the other hand, if your filter is too powerful for your tank, i.e., it is big for your tank, the first of all, it won’t fit properly and will look awful, and along with that, a powerful flow will be dangerous for your fish.

Hydor Prime External Canister Filter: It doesn’t matter if you are a professional fishkeeper, fond of marine life, or have a knack for fish keeping. Hydor’s Professional External Canister Filter is the ideal solution for your aquarium’s requirements. For a small tank, you can go for Hydor Prime External Canister Filter.

This prime canister filter offers a world in a package ranging from telescopic inlet pipes, quick filling, and protection controls, trying to get the best of marine engineering to your house or apartment.

The compact design of this product can offer an efficient filtration of 40-74 gallons and is best suited for any kind of small aquatic tank. There are also other variants of this model specifically for larger tanks, so if you like the design and service of this product, you can opt for them as well, in case you want to evolve your fish tank to a larger one.

Adjustable flow rate

To get the best out of your filter, choosing the one with an adjustable flow rate is convenient. This can easily save you the time to determine which flow rate is best for your aquarium.

A great way to tune your filter is by setting it at a high flow rate for 1-2 hours after your fish’s feeding time. And the rest of the time, you can set it at low. This will do you two good things:1st is it will constantly keep cleaning your tank, and 2nd it will save you a lot of tons of energy.

Fluval FX High Performance Canister Filter has a versatile touch to its flow rate and offers a range of adjustments to the flow rate.


To a canister filter, the motor plays a very crucial role. If the engine fails too soon, you have lost your filter. The durability of the motor is the most important component in your selection, and for that very reason, we rely on Italian and German-made components.

When you buy a filter made in China, you face the chance of receiving a malfunctioning motor.

Eheim Pro 4+ Canister Filter is a german-made product with high efficiency and durability.

Type of aquarium

Another important factor that must be kept in mind while selecting an aquarium accessory like a canister filter is the type of your aquarium, namely: saltwater and freshwater.

Saltwater aquarium

Freshwater and saltwater fish differ from each other greatly in terms of their living conditions; they must present such separate requirements of the marine environment to them to give them a happy and healthy life.

OASE Indoor Aquatics Biomaster is the best saltwater aquarium canister filter. OASE Indoor Aquatics Biomaster is ideal for both marine and freshwater aquariums. This canister filter model features a 4-stage screening system in a small package.

The four stages include biological, chemical, and mechanical filtration and a prefiltration stage for the most efficient filtration and purification results. 

The OASE filters are built with secured purification process mechanisms to maintain the water circulation so that it receives the maximum advantage of pre-filtration, filter media for cleaner and more purified water, special media for a wide surface area on the substrate for microbes to colonize, and activated carbon for optimal pollutant elimination and pathogen expulsion.

Freshwater aquarium

Like saltwater, you should provide freshwater fish with special care and conditions.

Fluval 07 Series Performance Canister Filter is an easy choice for freshwater aquariums. This Fluval product is more efficient than previous models due to its improved design and cutting-edge technology.

Along with the standard functions, this model has some fantastic enhancements. They strengthened the canister’s bottom corners to make it more sturdy and improved the aquastop valve opening mechanism.

The impeller cover appears to be reasonably effective. The new pull-out for the media baskets is useful because they all come out and back in simultaneously. The filter is noticeably quieter than previous models; it is extremely quiet but not silent.

How do canister filters work

The canister filter’s principal objective is to clean aquarium water using multiple stages of the filter medium. The ultimate purpose is to capture contaminants on the filtration medium and eliminate them.

The filtration medium is housed in the unit’s canister. The hoses installed inside the canister take up water due to gravitational pressure.

The next part is the water pump. This component is usually installed on the top compartment of the canister. Two other parts, an O-ring and clamps, help keep the pump in place against all the force exerted on the filter.

Some latest designs of canister filters include pretty useful auto-shutoff valves, especially when you are cleaning the tank. Canister filters’ capacity and gph (Gallons per Hour) vary, and there is no hard and fast rule of determining that.

It can only be determined by reading the instructions as even a single brand can manufacture filters of various capacities with varying gph for the same size of the filter.

Types of Aquarium Filtration

Aquarium filtration is classified into three types.

Mechanical filtration

Mechanical filtration is the process of removing solid particles floating in aquarium water. The contaminants that generally pollute an aquarium are unconsumed food, sand particles, and fish feces.

The first stage of filtration in a canister filter is mechanical filtration. The goal is to take up the pollutants so that the rest of the components in the unit do not become clogged. Organic compounds, for example, are captured inside small orifices by activated carbon.

If the openings become blocked with debris, the activated carbon cannot perform its function.

The most popular type of substrate used in mechanical filtration used in canister filters is foam pads. The most efficient filtration system has multiple stages of foam pads with varying porosities. The plan is to start with big porous sponges to filter out the debris.

The porosity of the following foam pad should be substantially finer. Tiny floating objects, such as algae cells and microscopic fragments of organic compounds, are captured by finer porous foam pads. These sponges can be washed and reused multiple times.

The foam pads need to be cleaned regularly, at least once a week. It is very easy to clean these pads. This is an important factor to consider as the sponges can gradually get clogged due to the build of larger aggregates of smaller molecules.

These large aggregates can clog your filter and render it useless. The sponge is an organic substance that is also susceptible to decay, which can provide a nutritious substrate for algae, and I am sure you won’t be desiring that.

Chemical filtration

Chemical filtration eliminates contaminants from aquarium water such as ammonia, nitrite, nitrate, and other dissolved hazardous elements.

Naked eyes cannot see chemicals that have been diluted. Despite being invisible, it is extremely hazardous to marine life. Ammonia, for instance, is generated as a byproduct along with the feces of fish and crustaceans. These chemicals deposited in the water can give it a yellow coloration.

Chemical filtering media for tanks come in a variety of forms. Some are suitable for both freshwater and saltwater tanks, while others are exclusively suitable for freshwater aquariums.

Granular activated carbon binds to residual organic contaminants in both freshwater and saltwater. Organic pollutants stain the water, emit scents, and raise the risk of serious health conditions in your aquatic pets.

The microscopic structure of micropores of activated carbon adsorbs organic molecules and traps them in the micropore mesh structure.

Other chemical filtration compounds include phosphate and ammonia removers. Both phosphate and ammonia are promoters of algal growth and are generally present in fish feces. So as said earlier, it is essential to clean these contaminants continually.

It is even more critical as fish dirty the water quite quickly, and this also increases the chances of algal bloom in your aquarium. Algal growth is an absolute no-no when it comes to aquarium conditions.

So as the name suggests, ammonia and phosphate removers do an excellent job of removing these contaminants and preventing algal growth.

Biological filtration

The process of biologically transforming poisonous ammonia waste into nitrite, which is also hazardous and finally to relatively innocuous nitrate, is referred to as biological filtration. Beneficial nitrifying bacteria carry out this biological mechanism. These bacteria enjoy adhering to hard substrates and forming colonies.

Inside the canister filter, biological filtering media provide a sanctuary for these microorganisms. Toxins are converted to nitrate by bacteria as water travels through the culture substrate.

A UV light is incorporated into the canister of more modern marine canister filters. UV radiation kills algae cells, as well as germs and protozoa that lead to fish medical conditions.

Although the UV light does not disinfect the water, it does diminish the frequency of harmful microorganisms. UV lamps are very beneficial in minimizing algae growth in aquariums.


What is the most powerful canister filter?

SunSun’s external 5-stage filter is the most powerful in the field. Because it has a filtration rate of 535 GPH and is suitable for aquariums up to 150 gallons, it may also go well for a 125-gallon aquarium or 100-gallon aquarium.

Is a canister filter better?

Canister filters outperform powerheads in terms of aquarium filtration efficiency. They feature filtration media, so they eliminate more wastes, dirt, and dangerous substances from your aquarium.

Are canister filter good for freshwater aquariums?

Canister filters are mainly meant for saltwater aquariums and tanks with plants and corals as they require a more vibrant and clean living condition. Still, you may also use them for freshwater aquariums as efficiently.

How often should I clean my canister filter?

Usually, you must clean canister filters at an interval of 3-4 months, but to be on the safe side and keep a check on their functioning and get the best out of them, I would recommend cleaning them once a month.

Our Verdict

When it comes to the health of your fish and aquatic plants, there should be no compromise. Canister filters are the best solution for keeping your aquarium clean and free from any kind of pollutants.

This will also ensure that your fish are in a healthy habitat where they won’t be affected by any kind of infections or diseases. Fish and marine plants are quite expensive to buy, so if they die out early, it impacts greatly both financially as well as emotionally.

Among all the filters out there in the market, OASE Indoor Aquatics Biomaster has the best efficiency and service. It is quite versatile and offers an incomparable 4-stage filtration process.

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