7 Best 3 Gallon Fish Tank Kit in 2023

Keeping a fish tank has become a common hobby. Because apparently, fish are easy to maintain as compared to other pets. Well, that’s true, but one cannot deny that keeping fish has its challenges. 

So, if you are a beginner who wants to hop into the trend of having an aquarium, you are advised to start with a smaller tank, say 3-gallon fish tank. While people generally choose a 20-gallon or 25-gallon tank, maintaining them takes more effort and energy. 

You can easily keep a 3-gallon tank in-home or office as it does not take much space. Also, it requires less money and time. Not to mention, this kind of tank comes in different shapes and sizes. That means you can choose the shape that you like the most. 

While there are plenty of options floating around the internet, we like the Aqueon Betta Falls Kit because it has a unique design. Besides this, the tank is also light in weight, which makes it easy to carry. 

Along with this 3-gallon tank, we have listed a few other options in this post from which you can choose the right one. And as you will reach the end, you will find maintenance tips and a list of things that need to be considered while purchasing a 3-gallon tank. 

Here are the Best 3 Gallon Fish Tank 

Below are seven of the best 3 gallons fish tanks that you can find in the market. Different brands offer these tanks, and they are the best in quality. They are made of the finest quality materials and come with unique accessories. Scroll down to have a look. 

#1 Aqueon Betta Falls Kit

Aqueon Betta Falls Kit

The first 3-gallon fish tank on this list is the Aqueon Betta Falls Kit. It is a unique-looking tank offered by a reputed brand called Aqueon. What makes this tank so unique is its innovative yet compact design. 

You can keep it anywhere but make sure it’s away from the reach of pets and children because it is made of glass. The three small sections of this tank make it easy for beginners to start their aquarium journey. 

You can keep a single fish in each compartment. This way, none of the fish would get into a fight with others, and thus, they will not die. The convenient design also makes the cleaning of the tank easy and quick. 

Talking about the size, it measures around 16.99 inches L x 4.92 inches W x 11.15 inches H. Also, it weighs only 0.9 kg. The transparent glass material used for the construction of this tank is durable and sturdy. 

Furthermore, it has a powerful filtration system that makes sure the water constantly flows. This system keeps the water fresh. All these compartments of the tank have frosted panels, which stop the fish from seeing each other. 

There is also a fill indicator window that gives an idea of the water at a glance. This tank kit includes food and water care samples. So, if you like the design, purchase this tank today. 

Key Features:

  • The tank has three compartments. 
  • The clear glass construction makes it durable. 


  • It’s an excellent aquarium that comes with an impressive design. 
  • Its unique design further makes the tank easy to clean. 
  • It is light in weight and can be easily transported. 


  • The only downside of this tank is the filtration system, which needs a slight improvement. 

#2 Koller Products AquaView 3-Gallon 360 Aquarium

Koller Products AquaView 3-Gallon 360 Aquarium

The Koller Products AquaView 3-Gallon 360 Aquarium is another 3-gallon fish tank that has a unique design. This premium 3-gallon tank has 360 visibility, making it one of the best options in the market. 

It’s a highly compact and reliable tank that does not require much energy. LED lights are installed with seven dazzling color selections, including aqua, amber, purple, red, white, green, and blue. These colors perfectly illuminate the tank and can be turned on or off in no time. This feature makes it a must-have. 

The tank is made of clear plastic, which has a contemporary design. While the design is basic, it’s attractive and highly durable. That means this tank will not give up quickly. Also, its plastic body makes it leak-proof. 

The 360 design of this tank makes it look cool. Also, the aquarium looks calming and relaxing from all angles. Talking about filtration, it has a powerful clean system that quickly cleans everything. 

Moreover, the tank has premium activated carbon that eliminates pollutants. It also reduces the chances of the fish tank getting cloudy. Moving to the size and weight, it weighs only 1 pound. Its size measures 10.25 inches L x 10.25 inches W x 14.5 inches H. 

Key Features:

  • It comes with seven attractive LED lights. 
  • The tank has 360-degree visibility. 


  • It’s an excellent tank that has compatible and unique packaging. 
  • It is strong and leak-proof. 
  • It is easy to maintain. 


  • It’s a beautiful aquarium but looks too small compared to other 3-gallon fish tanks. 

#3 Tetra LED Cube Shaped 3-Gallon Aquarium

Tetra LED Cube Shaped 3-Gallon Aquarium

Next on this list is the Tetra LED Cube Shaped 3-Gallon Aquarium. It’s a standard square-shaped fish tank that is made of clear plastic. It’s manufactured by the Tetra brand that has been offering the best quality fish tank for a long time. 

You can store it anywhere because its sleek acrylic design gives it a clear panoramic view from all sides. The aquarium offers a better underwater wildlife view, which almost feels like seeing an actual aquatic habitat. 

Talking about filters, it has a Tetra 3i filter that efficiently cleans the water. This tank is suitable for small tropical fish as they get a lot of space to swim freely. Also, there is an attractive LED light installed, which lets you show off your fish. 

Another thing that we like the most about this tank is its clear canopy. It has a hole that makes feeding easy and quick. Moving to the dimension, it is 10 inches D x 10 inches W x 10.512 inches H. It weighs around 4 pounds. 

This sleek and seamless fish tank makes a great personal underwater habitat. Also, it’s resistant to shattering. So, if you are looking for a long-lasting tank that does not break easily, you must purchase it. 

Key Features:

  • The aquarium comes with a Tetra 3i filter. 
  • It has a hole to feed fish. 


  • The best thing about this tank is its convenient size. 
  • It also has an excellent panoramic view. 
  • Lastly, it’s made of sturdy material that does not let it shatter quickly. 


  • The only downside of this tank is the filter cartridges. This thing resets the tank cycle, which can be harmful. 

#4 Tetra ColorFusion Starter Aquarium Kit 3 Gallon

Tetra ColorFusion Starter Aquarium Kit 3 Gallon

This unique fish tank also comes from the house of Tetra. It’s the Tetra ColorFusion Starter Aquarium Kit 3 Gallon that weighs 1 pound and is ideal for keeping in-home or office. 

It’s a remarkable tank trusted by many people for its construction, durability, and design. It is made of acrylic and has 88 x 12.5 x 12.9 inches dimensions. It has a half-moon shape, which makes it different from other tanks available in the market. 

The half-moon design offers a 180-degree panoramic view that further enhances the look and feel of this tank. Besides this unique shape, the bubble curtain bubbling disc also sets it apart from the rest. 

The rainbow of LED light colors further enhances the entire look of the fish tank. Not to mention, the clear canopy has a hole that simplifies the feeding process. So, all in all, it’s a colorful fish tank that you cannot miss having if you want to fill your place with vibrant colors. 

Key Features:

  • This tank has a half-moon shape. 
  • It further comes with a bubble curtail bubbling disc.  


  • The best thing about this tank is its stylish design. 
  • This tank is light in weight. 
  • Also, it has an illuminating bulb, which makes it look appealing. 


  • One thing that you might not like is the small filter that slows down the water cleaning process. 

#5 MarineLand Contour Glass Aquarium Kit

Marineland Aquarium Kit - Contour 3G (3G Rail Light), Shippable

If you are looking for a unique aquarium, you should purchase the MarineLand Contour Glass Aquarium Kit. It comes from the house of MarineLand, a brand with a good name in fish tank manufacturing. 

Talking about this tank, it’s an Amazon’s Choice. That’s because it is made of the best quality material. The rounded corners of this tank make it easy for people to view the fish swimming inside. 

Besides the multiple viewing angles, the moonlight and daylight setting makes it a must-have. This tank has a blue LED light that creates a visually appealing moonlight effect. Also, bright white LEDs create a shimmering sunlight effect. 

Moving further to the dimensions, it measures 9.5 inches x 10 inches. There is an advanced 3-stage filtration system that works perfectly to create a clean and healthy aquatic environment. 

Not to mention, the tank comes with activated carbon inside that removes the impurities, odors, and discolorations. At last, there is a bio-filter foam that creates a 3D area for the bacteria. 

Key Features:

  • It’s Amazon’s choice. 
  • The LED light creates sunlight and moonlight effect. 


  • The best thing about this fish tank is that it’s easy to set up. 
  • It even has a hidden filtration system that quickly cleans the water. 
  • The glass canopy of the tank simplifies the feeding system. 


  • One thing that you might not like is this tank’s weight that makes it difficult to carry. 

#6 Koller Products Aquaview 3-Gallon Fish Tank 

Koller Products Aquaview 3-Gallon Fish Tank

If you are a beginner, this Koller Products Aquaview 3-Gallon Fish Tank is perfect for you. That’s because it’s small, which makes it easy to clean. Also, it looks good as it comes in a perfectly round shape. 

Its highlight is the energy-efficient LED light that comes in seven dazzling colors. These colors include blue, green, purple, aqua, red, amber, and white. Besides the light, the powerful filtering of this tank also makes it a must-have. 

The exceptional filtration has a flow rate of 25 gallons per hour. That means it can effectively remove organic pollutants. Also, this filter can take out fish waste. 

This tank has an impact-resistant plastic body. Also, it has crystal clear clarity that does not blur the vision. So, if you are interested, purchase it today. 

Key Features:

  • Its powerful filter quickly removes pollutants. 
  • Tank is impact-resistant. 


  • The best thing about this tank is its multiple LED colors. 
  • Also, it has a leak-proof body. 
  • Lastly, it features powerful internal filtration that effectively takes away the dirt. 


  • The only disadvantage of this tank is that it does not have built-in heating. 

#7 Koller Products AquaView 3.5-Gallon Fish Tank

Koller Products AquaView 3.5-Gallon Fish Tank

The last recommendation on this list also comes from the house of Koller. It’s the Koller Products AquaView 3.5-Gallon Fish Tank. This unique tank is known for its semicircular shape and plastic body. 

It measures 11.25 x 8.75 x 13.5 inches. This fun-looking aquarium does not require much effort and energy for cleaning. Also, it has seven LED lights, which enhances the entire look of this aquarium. 

This aquarium is perfect for people who want a little more than 3 gallons tank. It’s a 3.5 gallons tank and has a complete water filtration system. 

The complete filtration system keeps the water clean and provides a better living condition for the fish. Also, this excellent filtration makes this tank the best choice for keeping small fish like goldfish, betta, or any other tropical fish. 

Moving further, it has premium filter cartridges that are easy to install and replace. The cartridge has dual-sided poly-fiber floss for effectively removing debris. 

The crystal-clear viewing of this tank makes it look even better. Also, it’s a one-piece tank that further decreases the possibility of leaking. So, if you are interested, purchase it now. 

Key Features:

  • The tank comes with premium cartridges. 
  • It has an interesting semi-circular shape. 


  • It’s a one-piece tank. 
  • It comes with bright LED lights. 
  • It offers a crystal clear margin. 


  • The filters of this tank might disappoint you. 

What to Look for in the Best 3 Gallon Fish Tank 

Getting a 3 gallons fish tank might sound like an easy affair, but things can soon turn out to be overwhelming if you don’t get all the necessary items. These items are the tank equipment that makes it easy to take care of fish. 

Scroll down to check the list. 


If you are selecting a tank that does not come with an effective filter, you might have to take extra effort into finding one. That’s because the filter is one of the crucial elements of a fish tank, without which fish cannot survive happily. 

Also, the absence of filters can lead to water contamination since removing organic matter, and harmful chemicals can become difficult. 


Indeed, every fish tank does not need a heater. But it’s essential to have one because your fish might need it if the temperature drops down. Also, heaters come in different sizes. So, make sure that the heater you are getting with the tank is smaller because a 3 gallons aquarium does not need a big heater. 


Good quality lighting in an aquarium is needed because it helps in photosynthesis and growth. So, do detailed research to find the right light or pick a tank that comes with a LED light to save yourself from the extra work. 

How to Maintain a 3 Gallon Aquarium 

A 3-gallon tank is easy to maintain, but maintenance might get harder than you can imagine without the proper information. 

When changing the tank’s water, it’s crucial to observe the temperature closely. That’s because the small size of the tank makes it vulnerable to sudden temperature changes. 

Also, a 3 gallons tank needs a small yet effective filter. While the fish living in the tank might be small, they can produce enormous quantities of biodata, degrading the water quality. 

It’s vital to change around 30% of the tank water every week. Frequent water changes in small quantities are required because it helps in removing chemicals and waste. That means better living conditions for fish. And when fish live in a healthy place, they stay happy.

A secret of keeping a small aquarium is accompanying the small cute fish with a big one. Make sure the big fish you are selecting can create a stress-free environment for others. 

Also Read: Best fish for 3 gallon tank


A 3 gallons tank is ideal for both beginners and expert tank keepers. People get this size aquarium because it can be kept anywhere, and it looks cute. Not to mention, with proper care, a 3 gallons aquarium can be easily maintained. 

Since this size fish tank is getting popular, different brands are manufacturing it. But our favorite is the MarineLand Contour Glass Aquarium Kit. This unique-looking tank has a hidden filter for effectively cleaning the water in no time. 

But if you are not looking for a tank with a hidden filter, you can consider other given options. Check their pros and cons, and if you like any tank, click on the link to make an immediate purchase. 

Lastly, we have given a few tips that can help you maintain your 3 gallons fish tank. Make sure you follow each of the given steps to offer your fish a better quality of life. 

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