If you’ve been looking at 20-gallon rimless aquariums but aren’t sure where to start, we’re here to help! Finding a high-quality rimless aquarium is important to make sure the tank not only meets your needs but doesn’t leak at the seams. Rimless aquariums are sleek and beautiful, and you don’t want that aesthetic to be ruined by a flood in your living room.
We’ve put together reviews of the top 4 best 20-gallon rimless aquariums to help you make an informed decision on the perfect aquarium to meet your needs. Rimless aquariums are perfect whether you’re wanting to create an aquascape or a home for fish or invertebrates. Rimless aquariums are a great option for customization, allowing you to bring your aesthetic to life in your home.
Keep reading to learn about our favorite 20-gallon rimless aquariums.
Table of contents
A Quick Comparison of Our Favorites
|Best Overall||SeaClear Acrylic Aquarium||
|Best Value||Lifegard Aquatics Iron Crystal Aquarium||
|Premium Choice||Landen 60P Rimless Low Iron Aquarium||
|SC Aquariums All in One Aquarium||
The 4 Best 20-Gallon Rimless Aquariums
1. SeaClear Acrylic Aquarium – Best Overall
The best overall 20-gallon rimless aquarium is the SeaClear Acrylic Aquarium. This aquarium is available in multiple sizes and shapes, including two 20-gallon versions. This tank is safe for saltwater and freshwater.
Acrylic has a higher chance of scratching than glass, but it is 17 times lighter than glass, clearer than glass, and does not create the visual distortion often seen in glass tanks. Acrylic is impact-resistant and shatterproof, although it still can break if knocked off of a surface. This tank has clear, nearly seamless corners and a built-in lid. The lid cannot be removed from the tank, but it has two holes large enough to fit your arms into and a slotted opening perfect for a filter.
The measurements of this tank are 24 inches long by 13 inches wide by 16 inches high. The built-in lid sits flat, so there is not a raised hood. This tank kit includes the tank, a removable light, and backing. There is more than one solid backing color available, and you can also purchase this tank without backing for use in the middle of a room.
2. Lifegard Aquatics Iron Crystal Aquarium – Best Value
The Lifegard Aquatics Iron Crystal Aquarium is the best 20-gallon rimless aquarium for the money. This tank is made from ultra-low iron glass and has beveled edges, making it less likely to scratch or cut yourself on the edges. Low iron glass has a higher clarity than regular glass, with this tank having clarity around 92%. This tank is available in multiple sizes other than 20-gallon.
The corners of this glass tank are sealed with clear silicone, giving them a nearly seamless appearance. This tank has strong, ¼-inch thick glass, so it is heavier than acrylic and not shatterproof. The weight of glass tanks makes them less likely to be knocked off of surfaces.
This tank measures 24 inches by 12 inches by 14 inches and includes a foam leveling mat to ensure it sits perfectly flat. This aquarium does not include lighting or a lid.
3. Landen 60P Rimless Low Iron Aquarium – Premium Choice
The premium pick for 20-gallon rimless aquariums is the Landen 60P Rimless Low Iron Aquarium. This tank is made from low iron glass with 91% clarity. The glass in this tank is 8mm thick, which is just over ¼ inch. This tank is available in multiple sizes.
This tank measures 23.6 inches by 15.7 inches by 15.7 inches. The edges are sealed with clear silicone and this tank is heavy enough to not be easily knocked over, although it is not shatterproof. It does not include a lid or light, but it does come with a foam leveling pad. This tank should be placed on a level surface with the mat underneath. It has flat edges, which may cause cuts or scrapes if not handled carefully.
There is a small “Landen” logo on the front lower corner of this tank, but it can easily be removed with a razor blade if desired.
4. SC Aquariums All in One Aquarium
The SC Aquariums All in One Aquarium is made from low iron glass, making it clearer than regular glass. This tank is actually 24 gallons, but it has a built-in rear 3-chamber overflow, which takes away from the overall size of the tank, leaving it with approximately 16 gallons of tank space. This tank is saltwater and freshwater safe.
This kit comes with a return pump and plumbing kit and is easy to set up. The 3-chamber overflow of this tank means that this tank can be used as a primary tank with built-in filtration or as a sump and refugium combination tank. The glass behind the 3-chamber overflow is not made from low iron glass, so it is less clear.
This tank measures 24 inches by 15 inches by 15 inches. It has clear silicone edges and flat glass, so it may cause cuts and scrapes. It does not include a lid or lighting.
|Why Pick an Acrylic Tank?||Why Pick a Glass Tank?|
|Lightweight||Heavy weight makes it difficult to knock off of surfaces|
|Clearer than glass||Supports larger amounts of water without needing a rim|
|Can be made without seams||Seams can be stripped and redone if the tank becomes damaged|
|Shatterproof||Extremely difficult to scratch|
|More unique shapes available than with glass||Standard shapes and measurements make finding pieces like lids easier|
Out of the tanks we reviewed, the SeaClear Acrylic Aquarium beat them all out as the best overall tank because of its lightweight, strong acrylic and built-in lid. The Lifegard Aquatics Iron Crystal Aquarium took its spot as the best value 20-gallon rimless aquarium because of its high quality and high clarity for a fair price. For a premium product, the Landen 60P Rimless Low Iron Aquarium because of its high quality and high clarity for a premium price under a trusted name. The SC Aquariums All in One Aquarium was the “honorable mention” of the group because, while it’s not without its flaws, it’s high quality and the built-in chambers make it a great option for built-in filtration or sump and refugium systems.
Did these reviews help you find a 20-gallon rimless aquarium to meet your needs? The best part about rimless aquariums is how customizable they are. If you decide you want a lid or a light, you have plenty of options available. A rimless aquarium will bring a timeless but modern look into your home.
Featured image credit: Africa Studio, Shutterstock