7+ Best Nano Aquariums [Reviewed + Buyer’s Guide]

Fish tanks and aquariums serve an essential and important role if you want to own a fish, or you are a growing lover of fish-keeping. It is given that you treat your pet fish as part of the family, which means that you would also want the best for them and provide them with a home wherein they would be comfortable and healthy. Therefore, this calls for one crucial task that you have to do, choosing the right tank/aquarium with great features that will work best for your pet and will suit your needs.

With the different types of aquariums and tanks, it can really be hard to choose which would be the best. One that you should think of considering is a Nano aquarium. Nano aquariums, compared to larger aquariums, are much easier to maintain, more practical to set up. Just like any other tank, it is necessary and essential for you to choose the Nano aquarium, which will be suitable for your pet and your needs. You don’t have to worry about this process because here in this article are 7 of the best Nano aquariums, a buying guide that will help you with choosing, and reviews that will help in backing up your decision.

What is a Nano Aquarium?

A Nano aquarium, given its name, is smaller and has the capacity to accommodate smaller species of fish, and as well as other aquatic life forms that are smaller in size. Having an aquarium like this is an excellent choice and is suitable for people who wish to add aesthetics to their offices, living rooms, bedrooms, and other smaller rooms. Sizes of Nano aquariums may range between 2.4 to 15 gallons. There are saltwater and reef Nano aquariums. Sizes of these may be as large as 25 gallons in order to accommodate additional features and rocks for the aquarium. Nano aquariums are suited and preferable for those who love fish-keeping and those who are aspiring, budding aquatic hobbyists.

7 Best Nano Aquariums in 2020

There are a lot of Nano aquariums that you will find, and with that, picking the right one becomes hard. Worry about choosing because here is a narrowed down list of Nano aquariums that you can choose from.

Fluval Spec III Nano Aquarium Kit

 Fluval Spec III Aquarium Kit, 2.6-Gallon

Fluval Spec III Aquarium Kit, 2.6-Gallon

The glass used for this aquarium is guaranteed clear and sturdy. Fluval Spec III Nano aquarium kit is the perfect one for those looking for a smaller, simpler aquarium. This aquarium is great for beginners and budding aquatic hobbyists alike. At night, it is accompanied by beautiful LED lighting, which makes it come alive, especially at night.

Fluval Spec III Nano Aquarium Kit’s filtration system simplifies the overall maintenance and cleaning process, making sure that the wastes are taken care of in an efficient manner.


It has a classic style, and the etched glass is guaranteed in good quality. This is also hassle-free to set up and comes with efficient filtration.


The size is definitely small. It only has a 2.6-gallon capacity, which is barely enough to keep more fish species.

Marineland Contour Nano Aquarium Kit with Rail Light

MarineLand Contour Glass Aquarium Kit with Rail Light
MarineLand Contour Glass Aquarium Kit with Rail Light

If you are looking for the perfect home for different fish species such as guppies, tetras, and other small fish, this aquarium is the one you should go for. You will have a nice view of your pets, as this comes with a canopy that does fit perfectly on top of it. This additionally comes with a beautiful LED lighting system that works great during the daytime and even during the nighttime.

The tank will remain stable no matter what kind of surface you place it because it has a large base. This aquarium also comes with an efficient filter, which assures that waste management will never be an issue for you.


Illumination is great day and night, and it comes with an efficient filtration system. Additionally, it has a stable and sturdy base, is easy to set up, and has a nice, fitted canopy which allows a good view of the fish.


The filter cartridge of this aquarium is a bit trickier and difficult to clean.

Hagen HG Fluval Flex Aquarium

Hagen HG Fluval Flex Aquarium 57L, 15gal, Black
Hagen HG Fluval Flex Aquarium 57L, 15gal, Black

Hagen HG fluvial flex aquarium is one of those Nano aquariums with larger-capacity. It can complement any room where it will be placed because of its modern, aesthetic design. Its filtration system is also notable for doing a great job of keeping the water clean and healthy. Additionally, the right temperature inside this aquarium promotes growth even for aquatic plants. This being said, it will work great in facilitating the maintenance of the water’s cleanliness and quality.


The illuminations brighten up the aquarium, and it has a contemporary, modern design. The water flow is customized, and the Hagen HG flex aquarium comes with a multi-stage filtration system.


The filter may be a hazard, is unsafe for very small fish species.

Coralife LED Nano Bubble Aquarium Kit

Coralife LED BioCube Aquarium Kit, 32 Gallon
Coralife LED BioCube Aquarium Kit, 32 Gallon

Many admire the Coralife LED Nano Bubble aquarium kit for its truly remarkable design. The aquarium makes use of advanced ingenious technologies, and its additional features and components work incredibly well too. With this aquarium, you will be able to mimic the actual oceanic ecosystem, recreating the environment wherein your pet fish is used to.

Biocube’s lighting technology is great. It has the ability to mimic the natural, actual day cycle of every or most aquatic species or organism. If you want an aquarium that is hassle-free to set up with great features, this is definitely for you.


It has a stable base and is easy to clean and maintain. It is also good for both freshwater setups, and saltwater setups come with great illuminations and have incredible aesthetics.


The filter system may be hazardous and unsafe for very small fish species.

Fluval Spec V Nano Aquarium Kit

Fluval Spec V Aquarium Kit, 5-Gallon
Fluval Spec V Aquarium Kit, 5-Gallon

The brand mostly focuses on functionality, which is the reason for its simplicity and minimal aesthetics. This being said, it doesn’t mean that it is plain and boring. There is still a lot of room wherein you can put additional deco, aside from your fish. The overall look of this aquarium will just depend on how you would intend to decorate the aquarium, the fish that will be placed in it.

Like all the other aquariums offered by this brand, this aquarium has a stable, sturdy base and additionally comes with a very dependable filtration system. As the aquarium has a simple, minimalist design, you can be sure that setup is hassle-free and that its clear glass is easy to clean.


Easily set up, has a sturdy and stable base, comes with good lighting, efficient filtration, and easy-to-clean and maintain.  


Fluval Spec V Aquarium kit doesn’t come with a heater.

Hygger Horizon Glass Nona Aquarium Kit

Hygger Horizon 8 Gallon LED Glass Aquarium Kit
Hygger Horizon 8 Gallon LED Glass Aquarium Kit

This is another aquarium that is best for beginners in fish-keeping. Hygger Horizon glass aquarium kit may possibly be one of the most stylish, modern, and coolest Nan aquarium that you will see. With its convex arched shape, you are sure of having an aquarium with an aesthetic appeal that is difficult to match.

The Hygger Horizon glass aquarium kit isn’t just all about beauty. It also provides efficiency for giving a conducive environment to different small fish species that you may have. Its filtration system also does a good job of cleaning the water inside the aquarium. The aquarium also has a nearly realistic environment with its permanent rocky background.


Comes with different illumination settings, has an adjustable filtration system, has a unique design that is stylish, and already comes in full setup.


Replacing this aquarium’s filter can be expensive.

Red Sea Max Nano Aquarium

Red Sea Max Nano Aquarium 20 gal
Red Sea Max Nano Aquarium 20 gal

This Nano aquarium is highly recommended for those looking for the best build quality with advanced technologies. The Red Sea Max Nano Aquarium is one of those high-end Nano reef aquariums. Its filtration system is completely hidden, which assures that everything is looking great and stays clean. To top this all off, this Nano aquarium features a rotatable screen that allows easier access.

The 7-color channels of this aquarium can be controlled fully through Wi-Fi. Aside from this, you’ll get full-spectrum, 55 watts of Prime LED Lighting.


Red Sea Max Nano Aquarium is ideal as a reef show tank. Included with the aquarium itself is durable and top-quality equipment, and it features the latest Nano reef tank technology.


Given it is high-end with advanced technology, it also comes at a high-end price.

Why should you get a Nano Aquarium?

Larger tanks would mean more time needed for maintenance. With Nano aquariums, it is easy and less expensive to operate, maintain, and setup. Given that this aquarium is smaller in size, this would be ideal and perfect for decorative purposes and adding aesthetics to any small room or office space. Nano aquariums don’t have any specified base requirement, unlike the larger aquariums. Additionally, these aquariums require lesser amounts of the modest heater, substrate, and smaller filter. Compared to materials needed for regular, larger aquariums, Nano aquariums do not cost much, which makes them budget-friendly too. You won’t be needing any larger accessories and equipment just to keep your aquarium in good shape and pristine condition at all times.

Buying Guide for Choosing the Right Nano Aquarium

Guide for Choosing the Right Nano Aquarium

This guide will be featuring the more important and essential factors that you would have to keep in mind when picking out the Nano aquarium for you.

The Size

Be aware that the Nano aquarium has the capacity of holding at least 2.4 gallons or equivalent to 10 gallons. Anything lesser than this capacity is no longer a Nano aquarium but instead is already classified as Pico aquarium. Freshwater Nano aquariums should have a maximum size of about 15 gallons. Saltwater Nano aquariums, on the other hand, requires a much larger capacity of 25 gallons. In choosing, you should consider the aquarium’s base and whether it would be ideal for the room where it will be placed. Larger means heavier, so it would mean that it should have a stable, sturdier base.

Its Shape

The majority of the aquariums come in a rectangular shape. Some fish tanks are higher than being wide, and some may be longer than the other. Keep in mind that you must pick the Nano aquarium, which will fit perfectly on the spot where you wish to place it, whether on your desk or on a table.

Fish Species that would be placed

Consider the factors of whether you have hardier freshwater fishes or whether you are going for a more colorful, vibrant aquatic life form and ocean-dwelling fishes. In terms of the aquatic environment, different fish species would mean different requirements and needs. Generally speaking, most of the time, it is best to stick with freshwater fish species because they are easier to maintain.

Is it glass or acrylic?

If you are going for the feel or look of a miniature aquatic environment or ecosystem, glass aquariums are preferable as they provide more rigidity and are more scratch resistant. Glass aquariums also tend to cost lesser, and distortion is less noticeable. When it comes to acrylic, on the other hand, it has the aesthetically-pleasing style and shape that most want. Acrylic aquariums, too, are lighter than glass ones.

Other Aquarium Features and Components

When it comes to set up, the majority of aquariums require the same basic setups. Additionally, the aquarium needs to have an efficient filtration system for managing wastes and keeping the water clean by getting rid of other impurities. You might also need to consider the appropriate lighting system and having a heater, depending on the fish species you have and your location. What also matters as well when picking out your Nano aquarium are the aquarium decorations, aquatic plant lives, and the fish aquarium substrate.

The Types of Nano Aquarium

Types of Nano aquariums

Know that there are 2 types of Nano aquariums. This classification is based on what type of fish species or aquatic life forms that can be placed in it.

Freshwater Nano Aquariums

Compared to saltwater Nano aquariums, freshwater Nano aquariums are much easier to maintain. This type of Nano aquarium is home to small fish species that are commonly found in rivers, streams, and lakes. Fish found in these waters are not as vibrant and colorful as the ocean-dwelling fish-species. Freshwater aquariums are cost-efficient and are easier to clean and operate. A freshwater Nano aquarium’s interiors and aesthetic may be enhanced with additional decorations and accessories.

Saltwater Nano Aquariums

A great advantage that you could get with saltwater Nano aquariums is the fact that it has more space and room where you can recreate a fabulous world of the oceanic ecosystem. With this aquarium, you will get live rocks, reef faunas that dance along with the currents, and also fascinating corals. A saltwater Nano aquarium is home to ocean-dwelling fish species. Once you combined the great decors of the aquarium and the colorful and vibrant fish species, you’ll get an aquarium that is bursting with color and life. A downside to this aquarium, however, is that it would require special materials and equipment which keep the closeness of the aquatic environment to the actual oceanic characteristics.

Reviews on the best Nano Aquariums

Reviews for all the aquariums have been summed up because all of the reviews for the brands and products have been positive. Many reviews say that having and choosing to get a Nano aquarium is one of the best decisions they have made. Additionally, reviews mention that their Nano aquarium makes it easier for them to enjoy their fish-keeping hobby without worrying about cleaning and maintenance. Rates for the said aquariums are all high and remarkable, making it a guarantee that all listed are truly the trusted names for Nano Aquariums.

Overall, reviews back up why these are the best Nano aquariums out in the market. These Nano aquariums will truly provide the additional piece and aesthetic that you are looking for to place in your office space or in any small area inside your home. Additionally, these aquariums will be best for housing your pet fishes, keeping them safe, healthy, and happy at all times.

Wrapping It Up

Once you decide that you would want to have a Nano aquarium, there are still other factors to consider, which can affect your decision of which would be the best one for you. Know what you are really going for, space where it will be placed, and the fish species that will dwell in it. The right and perfect Nano aquarium will be the perfect addition to any space as it will add the right amount of aesthetic to it. Also, when choosing your Nano aquarium, consider your budget and the expenses that you wish to put in. Different types of aquariums mean different costs as well. Always remember that a well-maintained and regularly cleaned Nano aquarium will bring life and brighten up any room for longer years.

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