9 Best Filter For 5 Gallon Betta Tank 2022 Consumer Reviews

Best Filter For 5 Gallon Betta Tank

If you’re in the market for a new filter, you might be wondering what the best filter for a 5 gallons betta tank is.

Because one of the most essential things you can do is find the appropriate filter. The correct filter will keep water in your aquarium fresh, while the wrong filter may make it uninhabitable.

Not only will you discover what the best filter for a 5 gallons betta is in this post, but you’ll also learn how to pick the proper one! Continue reading to learn more. Many novices and hobbyists like a 5-gallon fish tank since it has just the ideal volume for some simple but attractive aqua scaping. These aquariums, which are on the cusp of becoming the lowest size that can contain any fish, may perform pretty well with a decent 5-gallon fish tank filtration.    


We totally value the time of each consumer who is looking to purchase a new filter so if you don’t want to go through the whole article and you are in hurry then don’t worry as we have provided these 3 top picks from the entire list which you can purchase blindly.

What Filter Should You Use in a Small Aquarium?

Fish keepers generally have to select between two types of filters for tiny aquariums: power filters and sponge filters. These two filter types are the most regularly used and widely accessible for small to medium aquariums. When it comes to nano aquariums, these two types of filters are the best. Hang-on-back filters can be used in medium-sized aquariums, depending on their size. Canister filters will be more effective for large filters. Let’s have a look at the major features of each:

Hang-on-Back Filters or Power Filters:

Hang-on-back filters are one of the most famous and frequently used types of filters because they are simple to set up and provide multi-faceted filtration, combining mechanical, chemical, and biological filtration. These filters are ideal for small to medium tanks, as well as being inexpensive and simple to use. They mount on the rear of the tank and are equipped with a syphon tube. If you’re producing fry, the entry to the power filter may quickly swallow up the fry, so either buy a fry-safe filter or fry-proof the entrance yourself by putting something on the inlet. These filters use activated charcoal or another filter media in their cartridges, which aid biological filtration by allowing beneficial bacteria to colonies the filter material.   

Canister Filters:

Strong mechanical aquarium filters are the most suitable for medium to big aquariums (those greater than 40 gallons). Since canister filters are positioned outside the tank, beneath or under the aquarium stand they may be readily disguised. These huge instruments provide an outstanding mechanical, chemical and biological filtration.

Under gravel Filter:

While under gravel filters are not quite as common as surface filters, it doesn’t imply they shouldn’t be used. Instead of filter media, these filters employ the gravel beneath them to filter the water. The gravel will provide biological and mechanical filtering and will just need to be vacuumed every now and then. It’s a lot simpler than dismantling and cleaning a filter. However, one of the disadvantages of under gravel filters is that you can only use them when you’re putting up your tank. There’s also no chemical filtration (which you’ll need if your tank has to be medicated). 

Internal Filters:

Internal filters are another frequent type of filter found in many aquariums. They pull water through a sponge that traps trash and houses beneficial microorganisms using a tube that is typically located outside of the tank. Internal filters have just two drawbacks: they must be cleaned on a regular basis and they take up room in your tank.

Sponge filters:

For tanks with fry, sponge filters are most suited. These filters also offer mechanical and biological filtering, even if they can be much simpler to obstruct if the tank has too many residues. Air pumps or power heads are equipped with sponge filters. They enable good bacteria to grow and are also used for hospitals or isolation tanks in frying tanks. They are also easy to clean, however when cleaning or washing tank water is necessary to use else chlorine will kill the colony of good bacteria in the tap water.   

Also Read : 10 Best Sponge Filter For 10 Gallon Tank







Tetra Whisper Internal Filter For Aquariums


AquaClear, Fish Tank Filter, 5 to 20 Gallons


Fluval U1 Underwater Filter


Penn-Plax Cascade 600 Submersible Aquarium Filter 


Marina Power Filter


Aqueon Quietflow E Internal Power Filter


Penn-Plax Clear-Free Premium Under Gravel Aquarium Filter 


Penn-Plax Small World Aquarium Filter


Zoo Med Nano 10 External Canister Filter


1. Tetra Whisper Internal Filter For Aquariums

Category: best three stage filtration for 5 gallons betta tank.

best three stage filtration for 5 gallons betta tank

The best option to explore is the Tetra whisper in-tank filter. While it’s designed for 10-gallon tanks, it may also be used in 5-gallon tanks. It’s worth noting that it’s one of the most powerful filters on the list. And if you do put it in your tank, it’ll take up a lot of room.

  • Features: The Tetra Whisper Internal Filter For Aquariums has following features:
  • The Tetra Whisper has three stages of filtration. Mechanical filtering comes first, of course. First before water is filtered by the activated carbon filter, it passes through a thick mesh that captures any big bits of debris. Finally, once the water is as pure as possible, it passes through biological filtering, which removes any ammonia or nitrates. 
  •  This power filter makes use of tiny cartridges in a space-saving design to take up as little room as possible in your nano aquarium while maintaining high filtering quality.
  • Direction: These filters are mounted on the interior of the aquarium rather than on the outside, allowing the tank to be placed flush against a wall. The Whisper In-Tank Filter provides the same quality and performance as an external filter in as little as 2 inches of water, making it ideal for turtle aquariums or producing a waterfall inside the aquarium.
  • Measurement: Because the engine is submerged, In-Tank Filters are exceptionally silent. One issue is that there isn’t much area for you to upload your own material. However, the filter performs its job, and you won’t have to worry about your betta having to live in contaminated water.
  • Inexpensive
  • Easy hang on
  • Chemical, mechanical and biological filtration in one filter
  • Quite operation
  • Takes a lot room
  • Not versatile

2. AquaClear, Fish Tank Filter, 5 to 20 Gallons

Category: Top Best 5-gallon betta fish tank submersible filter.

Top Best 5-gallon betta fish tank submersible filter

The Aqua Clear is a small yet powerful power filter that filters water in many stages and creates a quiet “waterfall” effect. An AquaClear Power Filter is one of the most versatile hang-on filter systems. For the most popular tank configurations the five phases allow a wide variety of flux rates. The one-of-a-kind filtration technology provides up to six times the volume of the media and the longest water-to-mediate contact duration in the industry.

  • Features: This AquaClear Power Filter has following features:
  • The biological, mechanical and chemical filtration system allows you to modify the flow rate when the softer filtering is required by its innovative re-filtration system. With a reduction in the flow rate, multiple filtering takes place up to 50% of the water.
  • A foam inserts which may be changed every two months, eliminates waste and particles trapped; the porous surface of the insert permits colony by good bacteria.
  • An activated carbon medium adsorbing chemical, VOC and residues of chemical disinfection and odor.  
  • Direction: Installation and maintenance are easy, fast and convenient. The filter has all AquaClear Foam, Activated Carbon Filter and AquaClear BioMax. AquaClear has a wide spectrum of media designed particularly for the AquaClear 20 Power Filter. 
  • Measurement: The filtering capacity of similar aquarium filters is up to seven times higher. The Power Filter AquaClear 20 is suited for tanks from 5 to 20 gallons (18 to 76 litres). Maximum performance is 100 US gallons an hour (378 L/h). 
  • Easy to install
  • Adjustable flow rate
  • Seven time high filtration
  • Chemical, mechanical and biological filtration in one filter
  • Need sponge replacement

3. Fluval U1 Underwater Filter

Category: best 3 stage filtration for 5 gallons betta fish tank.

best 3 stage filtration for 5 gallons betta fish tank

Fluval U Series Underwater Filters offer 3-stage comprehensive and effective filtering, incorporating BIOM AX biological filtering, to ensure outstanding aquarium water quality (U2, U3, and U4 models).

  • Features: This Fluval U Series Underwater Filters has following features:
  • Depending upon your requirements, it can be employed as a secondary or principal filter. The filter chambers contain two foam pads, two polycarbon and 40 grams BioMax.
  • When used together, these products may eliminate from water of your aquarium a wide range of pollutants and enhance their clarity and cleanliness.
  • Direction: With a simple flip-top lid, the filter cartridge may be quickly and easily accessible for cleaning or change. Set horizontally for shallow aquariums, large water tanks, or for decorating a waterfall or upright against the aquarium walls for currents or customized flow patterns. 
  • Measurement: With its three-stage filters, BioMax offers excellent aquarium water quality, flip top access for quick and simple cartridge replacement, and three-way flow control, the new Fluval U Series is a standard for submarine filtration. Suitable for aquariums of up to 30 gallons of fresh water, saltwater and reptile water.
  • Installation is easy
  • Multistage filtration
  • Easy access to canister
  • Easy to operate
  • Expensive
  • Chambers too small

4. Penn-Plax Cascade 600 Submersible Aquarium Filter

Category: Best sponge filter for 5-gallon betta tank.

Although not as fantastic as the Aquaclear 20, it has many wonderful characteristics. The hang-on filter from Penn Plax Cascade is ideal to filter up to 7 liters tanks. It suits a variety of terrariums as well as for freshwater and salt water aquariums.

  • Features:  This Cascade 600 Submersible Filter for Saltwater or Freshwater Aquariums has following features:
  • It has a biological filter medium and a mechanical and chemical filter cartridge that you will need after 6 – 12 weeks to change (depending on how dirty the tank is).
  • The biological medium is wonderful since it may be used wet or dry. It’s continuously exposed to air, which boosts the pace at which helpful bacteria colonize it.
  • You may, of course, change the flow rate of this filter. You won’t have to witness your betta being pushed about by the water in the tank! In fact, you may transform the water into a mini-paradise for him. 
  • Direction: With the accompanying suction cups, the Cascade 600 fish tank filter is easy to install and can be horizontally positioned for covering. This fully immersed tank filter offers physical, chemical and organic filtration for fish tanks up to 50 gallons in capacity.
  • Measurement: The Submersible filter Cascade 600 will quietly be circulating crystal clear water throughout the tank. This filter circulates water at 175 gallons an hour for tanks up to 50 gallons (GPH). These filters provide both crystal clear water in the fresh and saltwater environment and are perfect for aquariums and terrariums. The UL approved Cascade 600 Filter has a length of 12 inches, a width of 3 inches and a depth of 5 inches. It operates on a 110V power supply.
  • Perfect for 50 gallons
  • Installation is easy
  • Wet/dry biological filter
  • Finish anerobic bacteria
  • Fresh and salt water aquarium
  • Flow rate needs to be improved.

5. Marina Power Filter

Category: Best economical filter for 5 gallons betta water tank.

While the Marina Power Filter is designed for aquariums with the capacity up to 10 gallons, it will also work well in a 5 gallons tank. Indeed, on the surface, this appears to be the best filter available, but it does have one major drawback. 

  • Features: This has following amazing features such as:
  • It’s yet another filter with a flow that can be adjusted. Even though it’s designed for 10-gallon tanks, this function will make it ideal for a 5-gallon betta aquarium.
  • On top of that, it features a strainer sponge at the intake tube’s end. If you’re anything like me, you’re constantly concerned about the intake damaging your betta’s fins or sucking up little tank mates. Nothing could be more terrifying. The intake strainer, on the other hand, will keep this from arising.
  • Direction: Installation and maintenance are easy, quick, and inexpensive.
  • Measurement: The motor is the most serious flaw of this filter. It’s on the intake tube rather than within the filter housing like other filters. It appears to be large and takes up a lot of room. It defeats the purpose of HOB filters, which is to conserve space in your aquarium.
  • Up to 10 gallons
  • Easy to install
  • Strainer sponge
  • Adjustable flow control
  • Easy to customize
  • Plastic
  • Occupy a lot of space

6. Aqueon Quietflow E Internal Power Filter

Category: Best ultra-quiet filter for 5 gallons betta tank.

Best ultra-quiet filter for 5 gallons betta tank.

The Aqueon Quietflow Internal Power Filter is a low-cost option. Which doesn’t make it any less of a great filter for any 5 gallons tank. 

  • Features: This Aqueon Quietflow Internal Power Filter have following features:
  • The filter’s flow is ideal; no additional equipment is necessary to force more oxygen into the water since the filter reduces the surface tension with its top-flowing flow. The filters are self-priming, and the filter set contains all of the necessary mounting hooks and suction cups.
  • It comes in a typical black hue that blends in well with most tank backgrounds. It is, nevertheless, obvious, as are all internal filters.
  • Installation: It requires practically no setup; simply take it out of the package, place it in the tank, and it will begin filtering water. The filter provides physical, biological, and chemical filtration, making it suitable for usage in a variety of aquatic tanks. 
  • Measurement: Activated carbon is the filter media supplied with the Aqueon, and it performs a fantastic job of cleansing the aquarium of troublesome components. The auto-start pump restarts and resumes filtration in the event of a power outage. 
  • Easier for beginners
  • Ceramic filter
  • Fits perfectly in aquarium
  • Pumps work without power as well
  • Small fish can suck in the intake

7. Penn-Plax Clear-Free Premium Under Gravel Aquarium Filter

Category: best under grave filter for 5 gallons betta tank made from high quality material.

best under grave filter for 5 gallons betta tank made from high quality material

The name of this filter has to be one of the worst aspects of it. Unfortunately, that is not an error; that is simply how the word is written. It is, nevertheless, an excellent under-gravel filter.

  • Features: This has following features:
  •  However, the Penn-Plax Clear-Free Premium Under Gravel Aquarium Filter is quite durable, and if you add it to your tank, it will perform admirably.
  • The fact that this filter is almost quiet is its finest feature. In fact, it’s one of the least noticeable filters on the list. It is quieter than many other techniques since it utilizes a smaller pump to transport the water and just goes through the gravel.
  • It’s also really simple to keep up with. Simply vacuum the gravel, which acts as a mechanical filter, once in a while.
  • Direction: When installing an under gravel filter, you must keep in mind that the gravel and pump you use are more essential than the filter itself.
  • Measurement: Finally, the filter is reasonably priced. Of course, you’ll need to purchase gravel, but you’d have to do so anyway, and other from that, all you will require is an air pump to filter the fluids.  
  • Easy installation
  • Small
  • Maintenance is easy
  • Quiet operation
  • Need to buy gravels

8. Penn-Plax Small World Aquarium Filter

Category: Best powerful filter for 5 gallons betta tanks.

Best powerful filter for 5 gallons betta tanks

The Penn Plax World Aquarium Filter is a hang-on-the-back type device that is suitable for use in any modest tank up to 5-gallon capacity and is famous with fish keepers with small to medium-sized aquariums.

  • Features: It has following features:
  • It can be simply connected to any type of air pump and positioned at the back of the tank to filter the debris and pollutants in the water because it is suitable for all types of air pumps.
  • The filter operates silently by sucking water in from the side and producing an upward water current via its scrubber with the flow of air bubbles from the pump.
  • Installation: These Media Cartridges are developed particularly for Small Word Filters (Model SWF1), making media replacement quick and straightforward.
  • Measurement: These Media Cartridges are for aquariums, tanks, and habitats up to 5 gallons and are particularly intended for Small Word Filters (Model SWF1), allowing for simple and straightforward media replacement. A two-pack of cartridges is available. They’re also suitable for both freshwater and saltwater aquariums.
  • Blends with all types of tanks
  • Easy to maintain
  • Multistage filtration
  • Silent operation
  • Ideal for small tanks
  • Cannot be used for big tanks

9. Zoo Med Nano 10 External Canister Filter

Category: Best ultra quiet filter for 5 gallons betta tank.

If you have the funds or are planning to move to a larger tank in the near future, this is undoubtedly the filter to get. The Zoo Med Nano 10 offers a lot of good features and only a few flaws.

  • Features: This ZooMed Nano 10 filter for saltwater or freshwater aquariums has all of the great features you’ve come to expect from ZooMed.
  •  The Zoo Med is designed for aquariums with a capacity of 10 gallons or less, and it shows with how much medium you can fit within. Your tank will be immaculate if you’re using the filter, and you will be able to customize what you are using to your heart’s delight.
  • And, obviously, it does not take up any of your aquarium’s space. Since it is a canister filter, all you have to do is hang it off the side of your aquarium and plug two different tubes into it. The intake will be one of these tubes, and the output will be the other.
  • The fact that this filter’s output may be used in two distinct ways is a fantastic feature. You have the option of using a nozzle or a spray bar. If you’re concerned that the current will be too strong, you can utilize the spray bar to lower the water flow rate while enhancing surface agitation.
  • Installation: Cleaning the filter itself is also extremely simple. Simply remove the top and pull out the medium, rinsing them in water before re-inserting them. You’ll also need to clean the impeller now and again, although it’s extremely simple to forget.
  • Measurement: Because it’s a canister filter, and it’s so effective, you won’t have to clean your tank as frequently. In fact, you may keep a 5-gallon tank for up to two weeks without needing to clean it. 
  • Very quiet.
  • Decent suction
  • Can be used for 8 gallon or less
  • Easy to install
  • Over time, tube clips will break.
  • Expensive

What To Look For In A Filter For 5 Gallon Betta Tank:

Aside from understanding the many types of filters, there are a few characteristics that make a filter ideal for bettas. As a result, you should always search for a filter that includes the following features:

  • 3 Stages of Filtration: As a norm, most filters include three stages of filtering. Filtration for trash, chemicals, and bacteria is done mechanically, chemically, and biologically. While chemical filtration can be replaced, you should still be able to store at least three different types of media.
  • Quiet operation: A loud filter is the last thing you want. It has the potential to convert your tranquil fish tank into a continual nuisance. While many tiny filters are already quiet, some of them can rapidly become annoying.
  • Ideal size: Finally, you don’t want a filter that is either too large or too little. If the filters are too large, a tremendous current will be created that is far too strong. And if it’s too tiny, it won’t be able to clean your tank properly.


The small aquarium filters that I described in this article will prove to be an essential component of your nano aquarium project, and this will appear in your fish’s wellness and well-being. As you can see, choosing the finest 5-gallon filter for betta aquariums is difficult! The Aquaclear 20 is, nevertheless, the greatest all-rounder. However, if you have the money to spend and intend on upgrading to a little larger tank, the Zoo Med Nano 10 is a great option.


Is a filter required for a 5 gallons tank?

Even though a 5-gallon tank is tiny, it still needs a good filtration system. Many newcomers to the activity believe that small tanks and nano tanks do not require fish tank filtration, however this is not the case. All you have to do is fill your nano tank with fresh tap water once a week or two.

Is a sponge filter sufficient for a 5 gallons aquarium?

Mini Sponge Filters are also suitable for tanks with a capacity of 5 gallons or less. They have a low water flow, which is ideal for Betta fish, fry, and shrimp tanks. It’s a biochemical filter that helps to keep water clean.

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