UNS Rimless Nano Glass Aquarium Tank

$49.99 USD ~~$85.00 USD~~

Usually ships in 1-2 business days from our fulfillment center

IMPORTANT: If your order arrives damaged, please take photos and contact us right away—we’re here to help. For full details on returns, exchanges, and other important information, please visit our FAQ.

Ultum Nature Systems nano aquariums offer a compact, focused approach to aquascaping. Featuring the original UNS 3N and 5N, these tanks have become well-loved for their unique proportions and the level of detail they encourage at a smaller scale.

Their compact size challenges aquascapers to create layouts with intention, where attention to detail on every aspect: from aquatic plant selection, hardscape placement, and final composition, is highlighted in the provided space. They’ve also become some of our personal favorite aquariums since they make it easy to experiment and rework layouts. We’ve done countless rescapes in these tanks over time!

Nano aquariums are lovely for maintaining smaller planted setups. They’re easy to maintain, fit comfortably into a variety of spaces, and are almost a special rite of passage in the aquarium hobby. Whether gifted as a first aquarium or a dedicated micro design, the 3N and 5N provide a rewarding way to aquascape at a small, but mighty scale.

Like all UNS aquariums, each tank is crafted with ultra-clear low iron glass and clean, minimalist lines, offering a refined foundation for your next freshwater planted or saltwater reef aquarium.

Shown in the video below is an Ultum Nature Systems 5N nano rimless tank:

Ultum Nature Systems 5N Nano Rimless Glass Aquarium Tank

Tank Features
Original 45° mitered edges for a seamless, high-end finish
Low iron glass with 91% clarity diamant glass
High-quality German silicone for long-term durability
Classic shape in compact form for intentional, small-scale aquascaping

Tank Size Guide


Model	Dimensions (IN) W x D x H	Glass Thickness (MM)	Volume (GAL)
3N	12.20 x 7.48 x 7.48	5	2.9
5N	14.17 x 8.66 x 8.66	5	4.6

Scapelight - Pocket Scapes

Small in size but huge in creative potential—nano aquariums are some of the most versatile and popular tank sizes in the aquascaping hobby. Their compact size makes them great for small spaces and if that isn’t a concern, the more the merrier! Don’t mistake their size for limitation. Nano tanks offer a unique opportunity to experiment with different aquascape layouts, aquatic plants, and combinations of each on a manageable scale.

Build Your Own Aquarium Kit - Nano Tank - Glass Aqua

UNS 5N

4.6 GALLONS

Nano Nature

We turned our first nano scape into a dining table series and this nature-style aquascape marked the third and final evolution! Situated in the Ultum Nature Systems 5N 4.6G rimless tank, we grew and kept a lot of the same aquatic plants. The most notable change was the swap of our main hardscape from Spider Wood to Pacific Driftwood, followed by an uproot of the original carpet. With a new Marsilea aquarium carpet and rearrangement of epiphytes, the final composition remained familiar but refreshing… just like nature!

Tank Dimensions: 14.17 x 8.66 x 8.66”
Plants Used: Staurogyne Repens, Ludwigia Natans, Marsilea sp., Anubias sp.
Hardscape: Pacific Driftwood
Substrate: Aquario Neo Soil

The Spider Wood Nano aquascape before this refresh

The Ludwigia Natans Super Red eventually grew too unruly and out of hand

We decided to rescape using similar plants in the same aquarium and soil

This is the perfect look for this planted tank in our opinion

Eventually it outgrew itself too!

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UNS 5N

4.6 GALLONS

Nano Peaks

Yama Mini is an Iwagumi aquascape housed in the same UNS 5N tank. We find that when we're working with large tanks for extended periods, coming back to a nano aquarium feels right. This layout utilized one of our favorite hardscape materials—Manten Stone. Trying to stack rocks in a small space and achieve a miniature mountain range rather than a "pile of rocks" requires more effort than one might think. We completed the look with simple plants for a “less is more” approach, because the scape itself required a chunk of creative mojo.

Tank Dimensions: 14.17 x 8.66 x 8.66”
Plants Used: Hemianthus Callitrichoides ‘Cuba’, Eleocharis Parvula ‘Mini’, Riccia Fluitans
Hardscape: Manten Stone
Substrate: Tropica Aquarium Soil

We usually plan out the hardscape layout first before adding substrate

Addind substrate will help elevate stones in Iwagumi aquascapes and add angles to them

Algae is to be expected during the first few weeks of setup

After a couple months of growth

The final manicured look of this nano planted aquarium

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Phyllanthus Fluitans Red Root Floater - Glass Aqua

UNS 3N

2.9 GALLONS

Nano Oasis

A tad smaller but still impactful, this easy Betta fish aquarium came to life in an Ultum Nature Systems 3N nano tank. The layout featured two mounds of Pacific Driftwood planted with a variety of live aquatic plants for enrichment and cover. Heavy plant mass also helped muffle the flow, creating gentler waters for our Betta. Although simple, there's something special about watching the different leaf textures intertwine and evolve naturally over time. We still get questions about this setup to this day!

Tank Dimensions: 12.20 x 7.48 x 7.48”
Plants Used: Phyllanthus Fluitans (Red Root Floaters), Hygrophila Pinnatifida, Mini Christmas Moss, Bolbitis Difformis ‘Mini’, Hydrocotyle Tripartita, Potamogeton Gayi, Echinodorus sp. Tenellus, Anubias sp., Bucephalandra sp.
Hardscape: Pacific Driftwood
Substrate: UNS Controsoil, Fine Natural Sand

The Pacific Wood Nano hardscape was zip tied together before hand to create this aquascape

Then we filled in all the hardscape gaps with aquatic rhizome plants like Bolbitis and Anubias species

Right after flooding the tank to be kept as a low maintenance Betta fish aquarium

We think he liked it :)

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Nano aquariums prove you don’t need a large tank to create something really cool. If you're new around here or a long-time scaper looking for your next setup, consider one of these. They're perfect for testing the waters—and they fit just about anywhere.

Overall rating: 4.965517 / 5 from 29 reviews.

AI Generated Review Summary

The UNS Rimless Nano Glass Aquarium Tank is highly regarded for its excellent quality and beautiful craftsmanship, making it a perfect choice for small-scale aquascapes. Customers appreciate its affordability, ease of maintenance, and suitability for beginners. The tank's unique dimensions and 45° mitered edges add to its aesthetic appeal.

Summary topics

Build Quality: 24%
Aesthetic Appeal: 68%

Review topics: ["size","glass","quality","tank","looks","shipping"].

Review highlights

"It is perfect small tank with great quality glass." — Jolanta G.
"Overall the tank is of high quality and it seems like it will last a decent amount of time." — Rj S.
"Good looking tank right size to figure things out as a beginner" — Anthony G.

Reviews

Beautiful tank

"Beautiful rimless tank! The bundle kit had everything I needed for an easy set up. There’s more than enough provided so I had extra substrate and rocks to use on another tank."

— Stephanie L. (5/5)

"Veey nice tank, everything included as advertised. Only issue i had was i ordered the aquarium set up and plants for it. The plants were shipped and delivered a week before the aquarium so i had to use them in other tanks and order more plants for this one. The plants were very healthy and looked great, i just would have appreciated everything shipped together"

— Vicki (4/5)

Perfect

"Perfect size"

— Julian R. (5/5)

Well built, crystal clear tank!

"Well built, crystal clear tank! The size makes it very fun to work with"

— Hunter S. (5/5)

UNS 5N beautiful tank.

"Tank arrived in perfect condition. Not a single imperfection to be found. Crystal clear glass looks fantastic. Already planted it and currently cycling. 10/10 would buy again. Excellent quality."

— Robert R. (5/5)

UNS Rimless Nano

"The tank came intact and is flawless. Thank you so much!"

— Aristides T. (5/5)

Nice betta tank

"Looking for betta tank and this was perfect size and excellent quality."

— Thomas L. (5/5)

Great little tank for a beginner!!

"Perfect for a first tank! Crystal clear!"

— Rozlyn J. (5/5)

UNS tanks are a must have!

"USN tanks are the best tanks I have owned. I really like the 45 degree angles."

— Peggy G. (5/5)

Good beginner tank

"Good looking tank right size to figure things out as a beginner"

— Anthony G. (5/5)

Q&A

Shipping
Orders are typically processed within 1-2 business days M-F. However, additional time may be required during peak seasons and federal holidays. For orders containing live plants, we exercise extra caution and assess factors such as travel distance and weather to ensure safe transit.

To avoid delays, please ensure all order information is accurate and complete. We cannot offer refunds and are not responsible for orders shipped to incorrect addresses due to errors in provided information. Once an order has been shipped, delivery times are determined by the carrier and are outside of our control. On average, shipments arrive within 2–5 business days, excluding weekends and holidays. For more information, please visit our FAQ page.

Returns
If you are not satisfied with your purchase, please contact us within 48 hours of delivery. Approved returns must be shipped back within 14 days of approval. Returned items must be unused, unopened, and in their original packaging. Specific return requirements, if applicable, will be listed on the product’s page. For more information, please visit our FAQ page.

Refunds
No worries, we’ll take care of everything as long as it fits the guidelines above.Most answers to general questions can be found on our FAQ page.