5 Best Canister Filters Reviews-Buyer Guide 2019

Since you have opened this article, I am sure about the fact that you are in love with fishes and is deeply concerned about their health and security! You should also be looking for the best Canister Filters like the Editor’s Choice FLUVAL G6, if you want your fish tank to be sparkly clean. This kind of filters works very systematically just like our heart does.

The Canister filter sucks in dirty water from the aquarium and pumps out pure water. The impure water goes through three major filtration processes namely Mechanical, Biological and Chemical.

The mechanism following which it works is quite simple but innovative. The filter draws water out of the aquarium using a tube. There is an external device which helps the water getting filtered. After the water goes through the three-step filtration process, the water is put back into the filter.

Most of the Canister filters have a water pump attached to it and that is how they work. However, some cost effective tanks might not have it. They require an extra pump to operate. This is by far the most productive and successful way to keep your fish tank clean.

What to look for while you are buying the Best Canister Filters:

Once you head for a device as effective as this you need to take care of certain things. These kind of filters are usually very cost effective in the long run and comes at an affordable price if you consider the ROI. You need to take care of these particular things once you are planning on buying a Canister Filter.

1. Easy to clean: You have to take care of the fact that the parts are easily removable and can be cleaned with much ease. The hygiene of the fishes in the fish tank depends on how well the filter cleans the water. To ensure that activity we also need to clean the filter. Thus, this is one of the most crucial things to look for once you are settling for a filter. Filters should definitely be easy to clean.

2. Availability of Individual parts: Whenever you buy a canister filter, make sure that the parts are individually available. It can happen so that after using it for a long period of time, a certain part is not working well. If the individual parts are not available, you might just have to replace the whole machine. That way it becomes way too difficult and involves a lot of money. If the individual parts are available, you can save a lot of money.

3. Timely Replacement: There are several important parts of your filter that might need timely replacement. You have to keep a check on those parts as the accuracy of the filter is highly dependent on them. I would like to take the opportunity of naming a few, for example: impellers, rings, rubber gaskets are certain parts that need to be taken care of.

4. Choose a filter according to your need: The size of the fishtank that you own should decide the size of the filter that you are going to buy. We have made it easy for you by mentioning the gallons while reviewing the best canister filters.

Our Top Pick For Best Canister Filter Review – 2020

Fluval Advanced Filtration System: G6

Fluval Advanced Filtration System Buy

If you are looking for one of the Best Canister Filters to keep your aquarium clean and germ-free, this is the best option we can offer you. This is undoubtedly the best canister filter for an aquarium.

However, if we look closely into the mechanism of this particular filter, we will find that it is extremely easy to use unlike a number of other aquarium external filters.

Some Inbuilt Feature Of The Fluval Advanced Filtration System:

1. This is undoubtedly one of the Best Canister Filters in the market. If you want to change the look of your aquarium, you should definitely go for this one.
2. You can use this particular filter to filter both saltwater and freshwater aquariums. That way you do not have to pick and choose. You can use it for both.
3. This filtration system is extremely easy to use. You will just have to press one single button and your job is done.
4. There are hardly a few filters in the markets like this one that give out some very important information about water flow, its temperature, and conductivity. The system is updated with Hydrotech that helps in the detailing.
5. The machine comes with a silicon gasket which makes the sealing on the top almost impossible to break.
6. This particular filter is perfect for 160 gallons aquariums.
7. The casing of the filter is nothing less than perfect. It is not only leak-proof but also controls the noise that is being produced by the filter.
8. The system is updated with AquaStop.


We cannot ignore the fact that this filter can almost filter water for a 160-gallon aquarium which is pretty impressive.


The filter supports multi-filtration process to ensure that no impurity might stay in the water and cause harm to the fishes.


The system is updated with a noise – proof casing which prevents the noise.


This system is extremely user-friendly. First of all, it comes with a manual so that it is not difficult for the users to use it. Secondly, the operation is quite simple. You just have to click one switch for the filter to start operating.

Pros and Cons of Fluval G6 Canister Filter:


  1. The system is updated with HydroTech which helps in giving out details like temperature, conductivity, etc that might be impossible for other machines to monitor. This is something that is not to be missed. This is one the reasons why the system is undoubtedly the best of the lot.
  2. It has a sound proof technology attached to itself.
  3. This is great to look at which in itself is a brilliant thing.
  4. The casing is such that it will avoid any kind of leakage.
  5. The parts are very easily available and are convenient to use.
  6. This filter is extremely user-friendly.
  7. Fit for filters of 160 gallons.
  8. Can filter water for both saltwater and freshwater aquariums.


  1. There are minor complaints regarding the pump and it is sometimes faltering.

During our review process, I found the device to be working exceptionally well and the sound and vibration ratio was down to minimum level. And ofcourse the device is aesthetically pleasing.

If you take the advantages into consideration, this is a definite buy.

Fluval Advanced Filtration System Buy From Amazon

Fluval Advanced Filtration System-G3:

Fluval G3 Advanced Filtration System

If you are too worried about the well-being of your fishes and their health, You should definitely get this filter. The Fluval Advanced Filtration System-G3 is one of the most promising ones in this field. The filter is updated with latest technologies and is extremely easy to use. It is user-friendly and can be used by anyone and everyone.
This system is extremely impressive and is used by a number of people to filter their aquariums.

Some Inbuilt Features of the Fluval Advanced Filtration System-G3 :

  1. 1
    You can use this filter for both freshwater and saltwater aquariums. You do not need to pick and choose. 
  2. 2
    This filter is extremely easy to use. Being user-friendly this attracts a lot of buyers. 
  3. 3
    This supports aquariums up to 80 gallons.
  4. 4
    You can depend on this filter for a long period of time because it has a silicon gasket attached to it and the sealing is brilliant
  5. 5
    You just have to press a button for the machine to start. It works out of the box.
  6. 6
    The construction is double walled and hence covers up the noise produced by the machine. We can call the machine sound-proof. The double wall is a very clever addition and also prevent the users from getting disturbed.
  7. 7
    The filter follows a multi-filtration process and hence ensures that no impurity stays in the water to hamper the fishes.
  8. 8
    There is a Hydrotech monitoring system that is installed in the filter. This system ensures that the machine gives out every little detail about the filter.
  9. 9
    The cast is strong and checks the leakage.
  10. 10
    Needless to mention this filter enhances the beauty of your aquarium.
  11. 11
    The system is updated with AquaStop. 


The capacity of the filter is about 80 gallons.


This particular filter supports three-stage filtration and leaves no dirt in the aquarium ensuring the safety of your fishes. The AquaStop feature is also a brilliant addition.


The cast is designed in such a way that it stops too much noise from bothering the users. This in itself is a brilliant quality that has to be applauded.


This is designed in such a way that it will never be too difficult for anybody to handle. You just have to press one button for the entire machine to start and there are user manuals that are given along with the filter.

Pros and Cons of the Filter:


  1. This system can be used for both saltwater and freshwater aquariums.
  2. It is very easy to use and is extremely user-friendly.
  3. Individual parts are easily available.
  4. The sealing is impressive, no chances of leakage.
  5. The Hydrotech monitoring system will give you details about the filter and its work.
  6. Extremely good to look at.


  1. There are no as such cons for this external canister filter.

The G3 is just a scaled down version of the G6, and is suitable for tanks of medium range and during the review I found the device to be pretty amazing.

This Canister filter is surely a go if it matches the specification of your fish tank.

Fluval G3 Advanced Filtration System Buy From Amazon

Fluval External 406 Canister Filter:

Fluval External Filter

If you have to look for the best aquarium Canister Filter, this is undoubtedly one of the most promising ones. I do not brag without a reason and I am totally up for it to prove it. This has the best features and is one of the worthiest filter canisters available in the market.

Some Inbuilt features of the Fluval External 406:

  1. This is one of the best in the market that supports filtration in multi-stages. That way we can assure the aquarium holders that this filter is equipped and totally capable of cleaning the water fully and without leaving any kind of impurities behind.
  2. This particular Canister Filter is fit for both saltwater and freshwater aquariums. You do not have to think about its execution.
  3. It can filtrate almost 100 gallons of water which is huge.
  4. This filter is updated with a sound dampening impeller. This is mainly put to use to stop a machine from creating any kind of noise which might annoy the users.
  5. The filter has a dual layer foam screen. This only leads to its perfection as the filtration is nothing less than perfect.
  6. The clog proof strainer is also one of the best possible additions and only makes the work better.
  7. The manufacturers provide you with multiple filtration baskets.
  8. There is an aqua stop valve that is inputted in the machine.
  9. The best part is, all the individual parts are available. In any case, if a single part is messed up you need not worry about it and can easily replace it.


The water flows from bottom to top in this particular filter. The water first passes through the inlet and then through the multiple filtration baskets.


As mentioned earlier, this filter can filtrate almost upto 100 gallons of water which in itself is very impressive and can be counted as one of the most important selling points.


We already know that this filter has a three-step filtration process. To add to it, it has a clog-proof strainer and a dual-layer foam. The machine is updated with such parts that it is undoubtedly one of the best of its kind.


You will find certain filters that create a lot of noise while operation. This is certainly not one of them. This Canister filter is updated with a noise- control system which prevents it from making any kind of noise that might create a disturbance.

User- friendliness:

There is a guidance manual provided with the item. This will help the users to set this up with their aquariums easily. Also, all the parts are individually available which can be of great help to the users once there is a problem with a certain part.


This item usually has a warranty of three years which is more than satisfactory.


  1. This external fish tank filters updated with a lot of features that are hardly available in other devices. The parts are very well made. The built os this entire thing is strong.
  2. Being square in shape , this tool does not take too much space to fit in.
  3. There is a sound proof-device installed in the aquarium. This hardly makes any noise.
  4. This canister aquarium filter supports multi-stage filtration.
  5. You can use this to filter both freshwater and saltwater aquariums.
  6. The filter also has an efficient motor technology.
  7. The individual parts are available making the work of the users easier.


  1. Impellers are not that good.
  2. There are times when the filter is leaking spilling water on the floor.

You must understand that a few of the devices produced can have defects, and since it was not reported from the major consumer base, we can surely suggest to go for the device. Also, the warranty would serve as a backup all the time.

Fluval External Filter

Hydor Professional 600 External Canister Filter:

Hydor Professional External Canister Filter

Hydor Professional External Canister filter is not very new to the market and was already a hit since it had started. The users have realized how great it was and now we will see some reasons why it makes to the top of the list. It is extremely user-friendly and hardly causes any trouble for the people who wants to use it.

Some Inbuilt Features of Hydor External Canister Filter:

1. This tank is specially designed to filter the water of aquariums that has up to 150 gallons of water. With such huge capacity, this filter is sure to be applauded and praised.
2. The filter mechanism of this particular filter is the selling point. It is mighty impressive. What it does is, it makes the water pass through the media baskets and therefore there is no water by-pass.
3. This filter is impressive yet for another reason and that is, it neither makes any sound nor does it create any kind of vibrations. You will find filters that do not make any kind of noise but filters without vibrations are not to found generally.

4. This filter has ball-valve connections that make the flow of water easier than the rest. This feature also helps to shut the flow easily. You can also remove the parts easily for cleaning them or fixing any kind of glitch.
5. The filter circulates around 290 GPH.
6. The electricity consumption is about 35W!
7. Does not consume too much space and is very handy.

Capacity :

This filter has a huge capacity and can filter water for aquariums that support 150 gallons. The capacity is huge and is one of the very important reasons why people want to use it.


The filtration technique of this filter is unique. There is no water by-pass and instead of that, the water is forcefully made to flow through the water baskets. This makes the flow smoother.


The best part of this system is that it is updated with such a setup that it neither creates any kind of noise nor any vibrations. This will not cause any disturbance while you or your baby sleeps.


This device is extremely handy and consumes very little space, the technology is such that it is easy to clean all the parts. However, there is a user manual that is provided with the packaging which will answer all the questions regarding the set-up.

Pros and Cons of this device.


1. This is extremely user-friendly.
2. Gives out no sound or vibration.
3. This device is easily portable.
4. The capacity is huge.
5. The filter mechanism is different and can be applauded.
6. Does not consume too much space.


1. Some users complain about the leakage which can be treated very easily if taken good care.
2. The priming button is also messing up according to certain users.

The problems can be easily solved with a little care. I would suggest it a definite buy because while testing we found it to be a great value for money.

Hydor Professional External Canister Filter

The Hydor Professional Series Multi-Stage Canister Filter:

This is undoubtedly one of the best of the C-Series. Taking into consideration all the good features the manufacturers have put in its system, this filter is a must have for all those who are madly looking for the one they need to keep their fishes safe and sound. This clears the filter amazingly with its multi-stage cleaning process and is one of the best for some correct and sound reasons.

Some Inbuilt Features Of The Marineland C-Series Multi-Stage Canister Filter:

1. This is moderately portable and user-friendly.
2. Cleans the aquarium using the multi-filtration process. ensures that all the dirt and impurities are gone.
3. The capacity is really impressive and can filter aquariums up to 150 gallons.
4. The circulation is around 530 GPH.
5. There is no by-pass of water.


The capacity of this filter is commendable and hugely impressive. it filters for almost 150 gallons of water.

Filtration :

The filtration involves a three stage process and is good. A three stage filtration process ensures that all the impurities and harmful substances are wiped out from the aquarium. It also has 4 media trays to do the job better.


The noise that this particular filter creates might be soft but we cannot claim that the system does not produce any sound at all.


It does not take too much for the user to understand the kind of mechanism this particular system follows. The only problem one has to face is that the Canister gets extremely heavy once it is filled with water and becomes almost impossible to be carried.

Warranty :

There is a warranty period of about three years that is provided for this item. the customer service that comes with this item is something to be appreciated.

Pros and Cons Of this Device :


1. The filter supports three-stage filtration. That is Mechanical, Biological, and Chemical. This method ensures that the fishes are absolutely safe and the filter is perfectly clean.
2. The customer service provided with the product is commendable.
3. The built of this system is strong and stops leakage.
4. The noise created is soft and does not bother the users much.
5. The priming is also easy . It just involves one push.


1. The set-up has a bit of learning curve.
2. The Canister gets really heavy once it is filled with water
3. There are certain complaints about the leakage even though the built is strong.

We cannot ignore the kind of capacity this impressive filter and kind of service it provides. The Pros outweighs the cons on a major ratio. It is a definite go for fish lovers.

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