If you only want to keep a Betta fish tank, a 2.5-3 gallon fish tank is an affordable option that provides just enough space for one male Betta to live in. If you want to stock your Betta along with some tank mates, a 5-gallon fish tank or 10-gallon fish tank will provide a larger house for the fish. In this review, I will provide you with some of the best Betta fish tanks for you to choose as well as the methods for setting up and cleaning a small Betta aquarium.

Best Betta fish tank reviews

Marineland Contour Glass, 3 gallon aquarium kit

  • Marineland Contour Glass 3 gallon5 star rating (5/5 by editor)Check on Amazon.com
  • Tank: 3 gallon curved glass aquarium
  • Dimensions: 12″ W x 12″ D x 12.5″ H
  • Lighting: LED lighting (bright white and blue settings)
  • Filtration: adjustable flow water pump and RITE-SIZE Z Filter Cartridge.

This is a curved glass tank, the sleek design and hidden filtration system of the Marineland Contour Glass aquarium provide a panoramic and unobstructed view from any angles around it. Stylish foundation and small profile make it great for any table in your home or office.

The kit includes an LED light offering two settings – bright white and blue for both day and nighttime enjoyments. The glass canopy included is clear for light transmission. The lid can slide back over the filtration system for quickly accessing to the interior space of the tank for feeding your fish and maintenance.

The hidden filtration system behind the tankThe hidden filtration system behind the tank

The filtration system is stylishly hidden behind the main tank. It is powered by a filter pump which operates so quiet but strong enough to keep the water constantly circled. The flow of the pump is adjustable that makes it ideal for Bettas as well as other small fish loving gentle water flow.

A hidden filtration system is an abundant place for accommodating various types of filter media to completely purify the water and make it free of toxic ammonia and nitrite. It uses a RITE-SIZE Z filter cartridge (a floss pad with activated carbon included) and Bio-Foam to perform a complete 3-stage filtration (mechanical, biological and chemical).

There is nothing to complain about its quality, most things are included and you only need to buy a fish tank heater and some decorations to fulfill your setup. It is surely the best choice for those who are finding a small glass fish tank for their Bettas.

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Marineland ML90609 portrait 5-gallon for Betta and tank mates

  • Marineland ML90609 portrait 5-gallon5 star rating (5/5 by editor)Check on Amazon.com
  • Tank: 5 gallon curved glass aquarium
  • Dimensions: 11.8″ L x 11.8″ W x 16.8″ H
  • Lighting: a hinged light with white LEDs and blue LEDs providing daylight and moonlight settings
  • Filter: 3-stage hidden back panel filtration with adjustable flow filter pump and Rite-Size Z Cartridge.

The Marineland ML90609 portrait aquarium kit comes with a larger profile to provide your Betta more space to live happily and healthily. It is a portrait aquarium with curved glass front. Because of its taller profile, it is great for growing various tall aquarium plants recommended for starters such as Cabomba, Bacopa, Rotala… These tall plants provide your Betta comfortable beds near the surface to rest and gulp air. Besides, it is a great idea to establish a small planted aquarium with a high driftwood similar to one in the product picture.

As it is also manufactured by Marineland, the lighting and filtration system of this tank is very similar to the previous – Marineland Contour Glass 3-gallon. The sliding glass canopy makes it easy to access to the inside to set up as well as maintain the tank. If you are looking for a larger house for your Betta, this 5 gallon tank with its nice curved glass will provide spacious room for one male Betta with his tank mates.

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Find other 5 gallon fish tanks for Betta fish here: https://lovefishtank.com/5-gallon-fish-tank-kit/.

Tetra 29095 Cube 3-gallon Betta fish tank

  • Tetra 29095 Cube 3-gallon Betta aquarium kit5 star rating (5/5 by editor)Check on Amazon.com
  • Tank: 3 gallon cube plastic aquarium with pedestal base
  • Dimensions: 10″ W x 10″ D x 10.512″ H
  • Ideal for: small tropical fish, Betta
  • Lighting: LED lighting
  • Filtration: Tetra(R) 3i filter with Tetra(R) Whisper Bio-Bag Small Cartridge
  • Others: low voltage power adapter, setup guide.

This is a clear plastic cube fish tank, it comes complete with a stylish pedestal base. The compact and stylish design makes it a great choice for any desktops or countertops. The kit is a great choice for Betta as it comes with most things you need to set up a Betta tank such as LED light and filtration.

The Tetra(R) 3i filter included in the package is an internal filter rated for aquariums up to 3 gallons. Thus, it provides just enough flow rate and filtration to keep your tank clean and the Betta happy. The design makes it easy to set up and maintain the tank. The top features a feeding hole for easy feeding of your pet fish. A setup guide is also included for even a beginner can get starting with the fish keeping hobby.

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Fluval Spec III aquarium kit, 2.6 gallon

  • 2.6 gallon fish tank for Betta5 star rating (5/5 by editor)Check on Amazon.com
  • Tank: 2.6 gallon glass aquarium with aluminum trim
  • Colors: there are 2 available colors for chosen, black or white
  • Dimensions: 11.8 x 10.8 x 8.7 inch
  • Lighting: overhanging 31 powerful LED lighting system
  • Filter: circulation pump with adjustable output nozzle
  • Filter media: foam block, activated carbon and BioMax rings.

The Fluval Spec III is a glass tank with trim, the aluminum trims keep the glass walls together. It comes with an LED lighting and filtration system. It also includes various filter materials for the best and complete filtration in all types (mechanical, chemical and biological). Foam block for trapping solid waste; activated carbon for making the water clear; and BioMax rings for eliminating nitrogenous toxins resulting from fish waste.

The powerful filtration system is stylishly hidden behind of the glass tank. As you can see in the picture, the behind of the tank is a large space for containing filter media and an aquarium water pump. The entire system is operated by the water pump, which is strong enough to keep the aquarium water constantly circulated and filtered. The pump coming with an adjustable output nozzle for providing a gentle and quiet water flow that is loved by any small fish as well as Bettas. The large filtration system helps to reduce maintenance that makes it ideal for busy people.

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Marina 360-Degree aquarium starter kit, 2.65 gallon

  • Marina 360-Degree aquarium starter kit 2.65 gallon4.5 star rating (4.5/5 by editor)Check on Amazon.com
  • Tank: 2.65 gallon plastic aquarium with a removable cover
  • Dimensions: 10 inch x 10 inch
  • Lighting: LED lighting providing two color effects (white and blue)
  • Filtration: a hidden power filter with 2 filter cartridges.

Marina 360-Degree aquarium starter kit is manufactured by Marina, a quality brand for aquarium products like Marina LED aquarium kits for starters. The tank is made of clear plastic; however, its edges are light-green tinted to simulate real glass view. It is designed with a unique shape – a beautiful cylinder aquarium with a 360-degree view. With this design, you can enjoy your beautiful fish from any angle around the tank.

LED light with white and blue modesLED light with white and blue modes

Hidden filtration systemHidden filtration system

The tank comes with a canopy that is removable for feeding your fish as well as performing weekly maintenance. Under the removable cover are an LED light and a hidden filter. The LED light offers two color effects white and blue for enjoying your fish in both the day and night. Positioning under the canopy and stylishly hidden from view, the filter is able to accommodate 2 filter cartridges to perform the most effective mechanical and biological filtration to keep the water ultra clean and safe for fish.

With the removable cover, you can easily access to the inside of the tank to install as well as maintain it. The kit can be used for both cold or tropical fish. If you want to stock tropical fish or a Betta in the tank, you should buy a proper heater to keep the temperature at an optimal range for the fish. Your fish are surely happy and stand out the most of their beauty when kept in this great fish tank.

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Tetra 29041 Half Moon Bubbler, 3 gallon

  • Tetra 29041 Half Moon Bubbler 3 gallon4 star rating (4/5 by editor)Check on Amazon.com
  • Tank: a 3 gallon fish tank with 180-Degree seamless view
  • Dimensions: 12.5″ W x 6.9″ D x 12.9″ H
  • Lighting: Submersible LED lighting combine with an air curtain
  • Filter: Tetra’ s whisper filter and cartridge based filtration.

Tetra 29041 Half Moon Bubbler aquarium is shaped like a semi-circle. The front has no edges and allows great viewing all around. The unique shape that segues away from the traditional rectangular box of a fish tank and will look good in any room.

As we know, children like to peer in as close as possible to the aquarium, sometimes sticking their face onto the glass surface. Unlike traditional box fish tanks having sharp corners that may inflict injury, this half-moon shaped fish tank is surely safer for your children.

Tetra 29041 Half Moon Bubbler 3 gallonTetra 29041 Half Moon Bubbler 3 gallon

It also has a clear lid that offers unobstructed views. The wonderful feature of this product is a submersible LED light fixture which can combine with an air curtain powered by an aquarium air pump (all is included) to provide a color changing bubble effect as you can see in the product picture. Besides, it comes with a Tetra’s whisper filter and cartridge based filtration to keep the tank clean and clear.

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API Aquaview 360 aquarium kit with LED lighting

  • API Aquaview 360 aquarium kit with LED lighting4 star rating (4/5 by editor)Check on Amazon.com
  • Tank: 3 gallon cylinder fish tank, acrylic
  • Dimensions: 10.2″ L x 10.2″ W x 14.5″ H
  • Lighting: LED lighting with 7 colors (amber, aqua, blue, green, purple, red, and white)
  • Filtration: Superclean 10 internal power filter and Bio-Chem Zorb 10 filter cartridge.

The API Aquaview 360 tank is made of high-quality acrylic that provides a crystal clear 360-degree view from any angle. The beautiful design with cylinder shape makes it a great decor for any rooms in your home or office. Moreover, the LED light with 7-color effects (amber, aqua, blue, green, purple, red, and white) is a great addition to show off your fish at night.

API Aquaview 360 aquarium LED lightingAPI Aquaview 360 aquarium LED lighting

The filtration uses a Superclean 10 internal filter power filter and Bio-Chem Zorb 10 filter cartridge. The filter is the only drawback of the kit, it has received many complaints from the customers and isn’t very good for Betta. I advise you to change another filter if you love the beauty of this tank and want to stock Betta fish inside it. A small aquarium filter rated for 3 – 5 gallons is fairly cheap and works well for your Betta tank.

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How to set up a Betta fish tank?

Step 1 – Choosing a fish tank for your Betta

Betta fish tank setup guide

The key factor for providing your Bettas a good environment is the tank you choose to keep them in. The first consideration regarding this is size. Although Bettas can live in tiny cups of water or in flower vases, it’s hardly appropriate to keep them in such small containers where water is oxygen-depleted.

What is the best tank size for a Betta fish?

A 2.5 to 10 gallon fish tank would allow the Betta to stretch its fins and perhaps even have a neighbor or two. The larger the tank is, it is easier for you to provide a stable water condition for your fish. It has been observed that Bettas that have adequate space and enough exercise will live a longer and happier life.

Step 2 – Placing your Betta tank in an appropriate place

When first preparing their new home, it’s best to try to replicate a Betta’s natural environment. This will lessen stress in their lives and increase the likelihood of them flourishing in their new surroundings.

Bettas are accustomed to experiencing sunlight in their natural environment. If the room in which the tank sits does not receive natural light, the next best option is to provide artificial light. The light will not only benefit the Bettas but will also help the nitrification bacteria and plants located inside of the tank.

It is better to set your Betta fish aquarium in a space that’s consistently climate-controlled. Keep the tank away from sources that produce extremes of hot and cold, such as near windows, heaters, lights, air conditioners, and vents. Bettas can take a temperature change of 3°, at most. Any more might prove stressful for them.

Step 3 – Adding substrate, plants, and decorations

Betta fish tank decorations

When considering a substrate for the aquarium, it’s best to use a natural sort. Gravel that is painted is not a good option because the paint can dissolve into the tank’s water, which can harm your fish. You should also choose gravel free from jagged edges because the edges can cause damage to your fish upon contact. For this same reason, it’s also best to avoid metallic decorations.

Natural plants are an excellent choice for your Betta’s home and your fish will appreciate your attention to detail in this sometimes overlooked aspect of Betta fish care. Not only do natural plants serve as natural hiding places for Bettas, they also provide your little friends with some oxygen and help to break down nitrates which accumulate in the tank water. Marimo moss balls, Guppy grass and Amazon Sword plants are some of the best plants for Betta tanks.

If you don’t like to use live plants, you can use artificial ones or equip your Betta aquarium with a floating Betta log and a bed leaf hammock that will provide the fish peaceful places near the water surface to rest and gulp air.

Reference: Best decorations and plants for Betta fish.

Step 4 – Adding water to the tank

adding water conditioner

The water added to the tank must be completely free of any trace of chlorine. Tap water is an acceptable option provided it sits for at least 24 hours that enables the chlorine in the water to completely evaporate into the air. Alternatively, you can treat the water with a water conditioner which removes not only chlorine but also any harmful substances from the tap water. To keep Bettas healthy, the water in the tank should also be soft to medium (dGH 5-19) and neutral or slightly acidic (pH 6.8 – 7.4).

You’ll also need to remember to leave some space between the top of the aquarium and the water surface. Betta fish are known for their jumping ability, and it’s not uncommon for them to occasionally jump out of their aquarium. If a hood or glass cover is not available for one reason or another, a netting or mesh could substitute as a cover for the tank.

Step 5 – Setting up equipment

Do Betta fish need a filter?

Like Gouramis, Bettas are so hardy and they can live without a filter in a large enough fish tank; however, you will need to change the water more regular than using a filter. Using a filter, which helps to clean nitrogenous toxins (ammonia and nitrites) produced by fish wastes, is certainly better for the fish.

Bettas like still waters; hence, a filter with too strong flow rate can cause a lot of water turbulence and is not suitable for the fish. A gentle aquarium filter with adjustable flow rate is recommended for any Betta tanks.

Choose a filter for your Betta here: https://lovefishtank.com/small-5-gallon-fish-tank-filter/.

Do Betta fish need a heater?

Originally from tropical Asia, Betta fish are accustomed to water temperatures that are sometimes over 80 °F. Like all other freshwater fish, Bettas are temperature-sensitive. Too cool waters (below 75 °F) make them lethargic; too warm waters cause them to become overactive and their metabolisms to go into overdrive.

So what temperature should a Betta fish tank be? The survival temperature range for Bettas is between 72 and 86 °F (22-30 °C) while the optimal range is between 76-82 °F (25-28 °C). You will need a fish tank heater to keep the water temperature in this optimal range. Using a 25-watt aquarium heater for nano Betta tanks under 5 gallons, 50-watt for 10 gallons, and 100-watt for 20 gallons.

Do Betta fish need a light?

If your Betta tank is placed in a room, which does not receive natural light, the answer is yes. The light will benefit not only the Bettas but also the aquatic plants in your tank and the nitrification bacteria in the filtration system.

Make sure the light you use does not heat the tank water beyond what Bettas can tolerate. Placing the light at a safe distance from the tank will usually pose no risk of raising the water temperature. A cheap clip-on LED aquarium light is just enough to light a small Betta tank with under 10 gallons of water.

After setting up all equipment you need for the tank, plug them it and check if they are working properly or not before adding your new Betta fish to the tank. Because Bettas are hardy fish, you don’t need to wait for a month for the tank to cycle before stocking fish.

Step 6 – Adding your new Betta fish to the tank

Because the water that the fish is in at the pet store may be very different from the water in your home aquarium, you need to acclimate the new fish to your tank water (chemistry and temperature) before dropping it into your tank. These first hours can make the difference your Betta living a long and healthy life or becoming ill and swimming upside down in your tank.

Here is some important advice to follow to help ensure a happy experience for you and your new Betta fish:


When transporting your fish home they will be in a plastic bag (with water of course). Take the bag and float it in the aquarium for about thirty minutes, this allows the temperature of the water in the bag to adjust to match that in the aquarium.

Carefully open up the bag and add a little water from the tank to the water in the bag, about 10% of the amount in the bag should be enough. Repeat this process every 20 to 30 minutes until the bag is full of tank water. This process will adjust the water chemistry in the bag to match that of the aquarium.

Finally, slowly lower the bag into the water of your tank and allow your fish to swim out. Congratulation! Now you have a new Betta tank with a beautiful Betta swimming around inside the tank. The rest work is so simple, just maintain your tank every week (water changing) to keep it clean and your fish healthy.

How to change water for a Betta fish tank?

How much water should be changed?

Just like it is for any aquarium, regular changing water for your Betta tank is the easiest way to keep the water quality high and your Betta healthy. The amount of water that has to be changed depends on many factors: tank size, amount of fish, live plants, filter or no filter, etc.

At least a 2.5 to 5 gallon fish tank with a filter is required for the less maintenance. As a rule of thumb, weekly 15-20% water change should be performed. If there are live aquatic plants, it will need even less maintenance. Buying Nitrate test kit and testing the water once a week will tell you lot about how often the water needs to be changed. The higher nitrate reading after a fixed time means your tank water needs to be changed more frequently.

If there is no filter in your tank, it is better to change the water a little more often, 10% water change twice a week should be performed. For a tank smaller than 1 gallon, partial water changes should be done regularly to keep your Betta fish healthy.

Four steps for cleaning a small Betta fish tank

1. Cleaning the algae.

You should leave your Betta in his house and use some specific tools for water changes to clean the tank. Firstly, use an algae magnet cleaner to clean the algae on the aquarium walls.

2. Cleaning the gravel and remove 15-20% water.


Using a gravel vacuum cleaner to remove all leftover food particles and solid fish waste from the gravel. Remove decorations, and vacuum underneath them as well. If there are live plants in the tank, leave them there and vacuum around. NEVER use soap or other cleansers to clean anything that comes in contact with your Betta!

3. Maintaining the filter.

Simply rinse your filter media (foams, ceramide rings…) in the old aquarium water from the previous step. Sometimes, change the foam pads if they are too old; the ceramide rings can be reused for many years. If you use carbon media in your filter, it should be changed once a month to ensure the efficiency of chemical filtration.

4. Supplement new water to the tank.

Always adding water conditioner to the tap water prior to use it for your fish or shrimps so that harmful chlorine is completely dissipated. Because temperature fluctuations are very stressful for Bettas, you should raise the temperature of the water to match the temperature in the Betta tank before using it. You can use an aquarium heater to do this work.

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