Best Nano Aquariums

When it comes to beautifying your home or office using living nature, less is always more. Creating an amazing décor using nano aquariums is easy. They are small tanks that can host reefs, fish, turtles, reptiles and many more. Most nano aquarium owners decorate them with living plants, branches, stones or special decoration elements in order to offer their pets the perfect conditions for a healthy life. More than that, they enrich the space they live or work in using nature itself.

Nano aquariums are mostly suitable for both saltwater and freshwater fish. Basically, it’s not about the aquarium, but about the water, pets and accessories inside it. Saltwater nano aquariums usually have a maximum capacity of 15 gallons, while a reef tank enters the nano category if it has a capacity that is smaller than 30 gallons.

There are plenty of benefits in owning a nano aquarium. First of all, you must take into consideration the money-saving factor. Also, the necessary space is much smaller in the case of nano aquariums. The maintenance, the effort and energy that you have to invest in keeping such a tank are manageable. On the other hand, a nano aquarium cannot host a lot of fish. Also, water pet owners must pay attention to the accessories and systems inside. For instance, if the water heater breaks, the water temperature will drop in almost no time. The same applies to the filters or lighting systems. Therefore, a bit more attention is required.

If you are looking for the best nano aquariums and accessories that the market has to offer, you should know the size of the space that you have available and the number of fish that you wish to have. To help you make your decision quickly and efficiently, we have reviewed 5 of the best-selling products on the market. Check them out:

PreviewNamePriceMore Details
Fluval Flex 57 - 15 Gallon Nano Glass Aquarium Kit$$Click Here
Tunze USA 3152.000 Automatic Top off Nano Osmolator$$Click Here
MarineLand Contour Glass Aquarium Kit $Click Here
MarineLand Portrait Glass LED Aquarium Kit$Click Here
Fluval Spec V Aquarium Kit$$Click Here

1. Fluval Flex LED Freshwater Kit

Fluval Flex 57 - 15 Gallon Nano Glass Aquarium Kit
Are you looking for a basic aquarium for your fish? Do you have little space available but you want to buy a modern nano aquarium to beautify your home or office? Then this could be the product that you are looking for. With a size of 16 x 15 x 15 inches and a capacity of 15 gallons, this aquarium is suitable for those who want a lightweight, small tank. This product has a gorgeous design, with a curved front and 7500 K LED lamp. The white coloured lamp will make coloured fish and plants look amazing.

This nano aquarium includes a 3-stage filtration system that has chemical, biological and mechanical media, which is practical and useful if you are a busy person who cannot change the water every second day. Thanks to this filtration system, the water remains clear and your fish and plants healthy. Also, it includes a pump. All accessories are hidden in the back of the aquarium, for aesthetic purposes.

This nano aquarium is easy to install, along with the filter system, lamp, pump and heater, easy to clean and to maintain. Giving the easily removable cover of the tank, you will discover how comfortable it is to manoeuvre it.

What’s to like?

  •  It is small-sized
    It has a gorgeous design with a curved front
    It has a 15 gallon capacity
    It has a 7500 K LED lamp
    Its lamp’s colour can be changed from white to blue, red or green
    It has a 3-stage filtration system
    It includes a pump
    It has an easily removable cover
    It has a concealed back for wires and accessories
    It is suitable for fish and plants
    Any submersible heater can be used in this aquarium

What’s not to like?

  • It does not include a heater


2. Tunze USA 3152.000 Automatic Top off Nano Osmolator

Tunze USA 3152.000 Automatic Top off Nano Osmolator
An accessory that will make your life easier and will keep your fish healthier, the Tunze Osmolator is a water level controller that ensures that the aquarium is filled with just the right amount of water. In the past, when technology wasn’t as developed as in our days, maintaining the right water level in a tank required effort, energy and a lot of attention. You had to keep your eyes on the aquarium at all times to make sure that your fish and plants will not be affected by the decrease of osmotic pressure.

The Osmolator is a simple device that comes with an automatic top off system. It is designed to regulate water levels in tanks with a capacity of maximum 55 gallons and it comes with clear and detailed instructions. This product is equipped with a safety timer that can be adjusted manually. It is very easy to install and all you need is water and a reservoir. It includes a low voltage pump, mounting magnets, a power supply and a tubing controller. In case of malfunction, the built-in alarm will sound, so you will know when it stops working properly.

This accessory is practical and useful for fish owners who enjoy having such pets but don’t have the time to control the water level all the time. With the help of a mini sensor, this device is able to detect the water level and supply more of it whenever necessary.

What’s to like?

  •  It has a simple design
    It is very easy to use
    It is equipped with a pump and mounting magnets
    It has a mini sensor that detects water levels
    It has a built-in timer
    It has an alarm
    It works with tanks up to 55 gallons
    It regulates osmotic pressure
    It is suitable for nano aquariums
    It includes an outlet adaptor

What’s not to like?

  • It has a high price


3. Marineland Contour Glass Aquarium Kit

MarineLand Contour Glass Aquarium Kit

If you are looking for an aquarium with a capacity as small as 3 gallons, then you will love this product. Besides from being a nano aquarium that fits everywhere, it has a classy design, it is equipped with a rail lighting system and a filtration system that is adjustable. Also, it includes a filter pump and a filter cartridge. The 3-stage filtration system includes chemical, biological and mechanical filtration, so that you rest assured that the water is clean at all times.

This nano aquarium kit has curved glass that makes it look more spacious, creating a visual illusion. Its lighting system is comprised of a lamp with LED blue and white lights that enhance the fish and plants’ colours. The fact that the lamp is attached to the tank but is placed at distance from the water adds even more value to its design and allows you to easily clean and maintain the aquarium. More than that, the lamp has daylight and moonlight settings, so it becomes easy for you to imitate the natural environment of fishes.

This feature also helps you beautify your home or office, making it look more exotic. This tank kit features a glass canopy that allows you to feed the fish and add water cleaning products. Also, it serves as a protection accessory and prevents fish from jumping or escaping.

What’s to like?

  •  It is highly affordable
    It has a great design
    It has curved glass
    It has an LED lamp attached
    It has blue and white light
    It includes a glass canopy
    It comes with a filtration system
    It has biological, chemical and mechanical filters
    It has daylight and moonlight LED functions
    It is easy to install
    It is easy to clean and maintain
    It is suitable for small fish
    It has a 3 gallon capacity

What’s not to like?

  •  The filtration system is a bit too powerful for this tank’s capacity
    The pump must be installed carefully


4. Marineland ML90609 Portrait Aquarium Kit, 5-Gallon

MarineLand Portrait Glass LED Aquarium Kit

Marineland brings to the market another great tank for nano aquarium enthusiasts. This 5 gallon tank has a simple, yet attractive design, features an LED lamp with white and blue lights and daylight and moonlight functions. The rectangular shape of the nano aquarium is suitable for those who like to decorate their homes using geometric shapes, but it also looks great in open spaces. The 3-stage filtration system that is built-in is hidden in the back of the tank, concealed with a black plastic cover.

This aquarium kit’s filtration system includes biological, chemical and mechanical media that ensure that the water is always clean. The filter pump is adjustable, so if you want to adjust the filtration flow, you can do it. The hinged lamp reflects its light perfectly into the water, creating a great exotic scene in your home. There’s more to it: you don’t have to worry about consuming too much energy when having the lamp on all the time, as the LEDs are energy efficient.

A sliding glass canopy is also included and it offers easy access to the interior of the tank and it prevents fish from jumping. This nano aquarium is suitable for fish, reef, coral or other marine plants. It is a good choice for both saltwater and freshwater fish lovers.

What’s to like?

  •  It has an accessible price
    It is nicely designed
    It fits everywhere
    It has a 5 gallon capacity
    It features a 3-stage filtration system
    It has a concealed back
    The filtration system is hidden
    It includes a glass canopy
    It has an LED lamp with energy efficient LEDs
    The lamp has white and blue LEDs
    It is easy to install
    It is easy to clean and maintain
    It measures 11.8 x 11.60 x 17 inches
    It is lightweight and can be moved around at any time
    It does not need a stand

What’s not to like?

  •  It is not suitable for very small fish, as they can get stuck into the filter compartment


5. Fluval Spec V Aquarium Kit, 5-Gallon

Fluval Spec V Aquarium Kit

If you are into modern design and you want to buy a nano aquarium, this product could satisfy your needs. Its rectangular shape is rather longer than wider, which makes it suitable for minimally decorated spaces. It comes in both black and white and it looks good in both versions. Its capacity of 5 gallons is perfect for nano aquarium enthusiasts. This product is made of glass and has an aluminium structure. It has a concealed back, which is the only side of the tank that is not made of glass.

This nano aquarium includes a foam block and activated carbon. Also, it comes with a BioMax filter ring that ensures that the water will stay clean. Its LED lamp is powerful and slick, adding more visual value to the tank. The lamp is comprised of 37 LEDs and it is placed right above the tank cover, reflecting the light perfectly on to the fish and plants. As for the filtration system, 3 media are included: biological, chemical and mechanical. The pump and filter have separate chambers, so the maintenance can take place more comfortably. This nano tank measures 6.3 x 17.2 x 10.6 inches and weighs 13.9 pounds. It has a reasonable price, a contemporary design and offers value for money.

What’s to like?

  •  It has a reasonable price
    It has a contemporary design
    It is suitable for small fish
    It has a powerful hanging lamp
    Its lamp includes 37 LEDs
    It has a 3-stage filtration system
    It has a concealed back
    It has two separate chambers for the pump and the filter
    It is easy to clean and maintain
    It has a 5 gallon capacity

What’s not to like?

  •  It is not recommended for very small fish, as they can be sucked up by the pump


Final Thoughts

Owning an aquarium is possible even in the smallest spaces. As seen in our product list, the market is filled with nano aquariums that feature both an amazing design and surprising functionalities. If you are one of those persons who like to configure their own aquarium using separate parts from different manufacturers, then a basic tank with a sturdy structure is enough for you. If, on the other side, you are looking for something that is ready to use, you should choose one of the aquarium kits in our list. Whether you picture a curved tank or a rectangular one, with an overhanging lighting system or with no lights whatsoever, nano aquariums of all kinds are available.

The advantages of nano aquariums are obvious: less effort, less money, less stress. Also, they are amazing décor pieces. If you care about the aesthetics of your home or office, you should try to imagine how a nano aquarium would look like next to your plants, works of art etc. However, before making a decision, make sure you analyse the pros and cons above and that you check most of your requirements of your list.

Editor's choice