6 Best 20-gallon Rimless Aquarium (Tank For Fishes) Reviews

Do you prefer a 20-gallon rimless aquarium but you can’t pick the best model for your living space?

You’re not sure about features like filtration, light, or other equipment?

Don’t worry, we are here to help you. Keep on reading so you can check our top 6 that are 20-gallon or around 20-gallons and pick the best one. Read all the details and check pictures so you can be sure you choose the model that will perfectly fit your space. There is also a guide at the end of this post with many helpful tips.

6 Best 20-gallon Rimless Aquariums

BEST OF BEST 20-GALLON RIMLESS AQUARIUM

SeaClear Acrylic Aquarium Combo Set

Cobalt Blue Background
Even if this model has a very simple design we are sure you will easily catch your eye on it. With this beautiful cobalt blue background, this model will add some colors to your living space and easily match the style. It has a sturdy construction that will last you for a long time.

Water Application
The aquarium is fully made of an acrylic material which is the best choice if you’re a beginner and you’re afraid the tank will break easily. The sturdy 20-gallon rimless aquarium is lightweight which will provide easy moving and storing when needed. Tank is suitable for fresh and saltwater applications.

Great Transparency
With a measurement of 24 x 13 x 16 inches, this 20-gallon acrylic aquarium is suitable for small fish breeds like betta, tetra, or clownfishes. You can add natural or artificial plants in different colors to fulfill the whole habitat. Don’t worry about transparency, acrylic tanks provide a clear view.

Light Fixture
So you can enjoy the beautiful view, especially at night, this aquarium comes with a light fixture at the top. The transparent lid has multiple holes so you can easily sprinkle the food inside. This aquarium will fit on every stand or commode in your home.

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BEST CORNER 20-GALLON RIMLESS TANK

SeaClear Acrylic Aquarium

Modern Design
Space-saving models are a great choice for smaller areas like apartments, and this Seaclear tank for the fishes is one of the best you can find on the market. The sturdy aquarium comes in a modern shape that will easily catch everyone’s attention when they enter the room.

Hexagonal Tank
The hexagonal aquarium is fully made of acrylic material which is much stronger than glass. Even if the acrylic is strong, this tank is lightweight so you can easily place it on every desk, stand, or commode in your apartment. Aquarium can easily fit in every corner.

Fish Breeds
The acrylic tank will provide a crystal clear view from all sides so make sure you place this tank where you move the most. This 20-gallon rimless tank measures 15 x 15 x 24 inches and it is suitable for mini and small fish breeds in different shapes and colors.

Great Reflection
For best reflection at night, this 20-gallon hexagon aquarium comes with a light fixture on the top. The aquarium is safe for saltwater and freshwater application. Additional equipment like a filtration system needs to be bought separately. You can easily store this aquarium when needed.

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BEST WITH FILTER 20-GALLON RIMLESS AQUARIUM

SeaClear Acrylic Aquarium Kit

Hexagonal Shape
If you’re searching for a whole setup so you can start your aquatic home, this SeaClear model is one of the best on the market. It comes in hexagonal shape which is the perfect choice for the corners. This tank is made of sturdy material so you can have it for a long time.

Easy Fitting
The 20-gallon rimless aquarium has acrylic construction which provides great transparency. It is lightweight so the tank can easily fit on every larger stand or commode. Hexagonal aquarium measures 15 x 15 x 24 inches, and it can fit in every smaller house or apartment.

20-gallon aquarium starter kit includes a filter so your fishes can always have a clean environment. You will get a thermometer for easy checking if the water is optimal for the fishes. For decoration, there are 2 artificial plants that will provide more natural habitat.

Quick Setup
This 20-gallon rimless fish tank is suitable for freshwater and marine application. You can fit multiple smaller fish breeds inside. The aquarium comes with beautiful cobalt blue background. Lights on the top of the lid will beautifully reflect the whole interior. Installation is easy and quick.

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BEST TETRA 20-GALLON RIMLESS TANK

Advance Aqua Rectangle Aquarium

Simple Design
If you want to pick a model that will be perfect for tetra or other fishes of similar sizes, this model is one of the best on the market. A very simple design is perfect for everyone who loves the minimalist style and neutral colors.

Acrylic Tank
This 20-gallon rimless tank is made of sturdy acrylic material and is impact-resistant for safety. Acrylic tanks have great transparency and you will have a crystal clear view from all sides. Tak has a rectangular shape like most 20-gallon aquariums, so you can place it on every stand.

Water Application
The tetra 20-gallon aquarium can be used for fresh and saltwater application, depending on which fish breeds you’re planning to pick. You can place multiple mini and small fishes inside and add decorative plants, coral reefs, gravel, and other aquatic decoration inside that will create a beautiful environment.

Easy Feeding
A transparent lid at the top will prevent fish jumping and mess around, but it has holes on the back so you can quickly sprinkle the food on a daily basis. Light fixture at the top of this rimless 20-gallon fish tank will reflect the whole aquarium and provide a daylight effect.

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BEST BETTA 20-GALLON RIMLESS AQUARIUM

Lifegard Aquatics Crystal Aquarium

Easy Fitting
Even if this model is a little bit smaller than the rest from our list, it is a great choice for living spaces, especially for the apartment. The tank has a very simple design, which will provide easy fitting with the rest of your home decoration and furniture in your home.

Thick Glass
This aquarium measures 24 x 15 x 12 inches and it comes in a rectangular shape which is the best choice if you’re planning to place it on a commode in your home. The aquarium is made of thick glass which will provide a crystal clear view.

Quick Storing
Don’t worry about leaking, this 20-gallon rimless aquarium is strongly siliconized on the edges and impact resistant so you can have it for a long time. You can use this tank for saltwater or freshwater application, depending on your preferences. When it is not in the use you can easily store it.

Insulation Pad
20-gallon rimless glass aquarium can fit smaller fishes like tetra, betta, or clownfishes. You can add some other aquatic animals like crabs, as well. Because this 20-gallon betta tank doesn’t have a lid feeding will be quick and easy. Aquarium has a bottom insulation pad.

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BEST SALTWATER 20-GALLON RIMLESS TANK

STRELLALAB Landen Low Iron Aquarium

Minimalist Design
If you want to fit multiple fish breeds inside, this model is a perfect choice. Minimalist design can fit with any style and color in every home or apartment. This tank is made of sturdy and durable material and you can use it for years.

Clear View
Aquarium has thick glass construction which provides a clear view so you can enjoy it in beautiful colors every day. This 20-gallon rimless tank is strongly siliconized so you don’t have to worry if it will break easily. The rectangular shape of this tank can fit on every stand or desk in your home.

Spacious Space
This tank measures 23.62 x 15.75 x 15.75 inches and it can fit 25.4 gallons of water so your fishes can have much more space for privacy and easy swimming. Pick small and medium-size active fishes and add decoration to fulfill the whole environment.

Opened Top
The 20-gallon breeder tank is suitable for salt and freshwater. It doesn’t have a lid at the top so you can easily sprinkle the food and supplements on a daily basis. Additional equipment is not included and you can buy it separately if you needed.

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How To Pick The Best 20-gallon Rimless Aquarium?

If you love rimless models, but you still not sure which one from our list is the best choice for your living space, this guide will help you with picking.

Why Buy? – Rimless aquariums are, for sure, one of the most popular models on the market. Because of their simple and very minimalist design they can easily fit in every living space. They are perfect as a decorative piece and we are sure everyone will notice the aquarium in your home or apartment.

Durable Aquarium – One of the most important things to check before buying a tank is definitely quality. Make sure the model is made of a sturdy material so you can be sure you will have it for years. It is important for fish safety, as well. Tanks are usually made of glass or acrylic material. We recommend acrylic aquariums which are strong enough to last you for a long time.

Pick The Fishes – Depending on your preferences pick the fish breeds that can be used together, and be careful if some breeds are too aggressive. We recommend smaller fish breeds like tetra, betta, gold, or clownfishes. Most aquariums are suitable for freshwater and marine application. Place natural or artificial plants and create a more natural habitat.

Additional Features – When picking a 20-gallon rimless aquarium or around 20 gallons, check if the model has a hole at the top so you can easily feed your fishes every day. Make sure the aquarium has lights for the best reflection, especially at night. If you’re searching for a tank that will save you time with daily maintenance. we recommend 20-gallon fish tank with a lid that comes with a great filtration system.