UNS Ultra Clear Rimless Tank - 21.3GAL | 81L - 35.43x11.81x11.81 | 90x30x30 CM, 8mm Glass Thickness, Leveling Mat Included - Low Iron, High Clarity Fish Tank w/ 45° Mitered Edge - [90L]
Condition: New
$384.99
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Availability:
In Stock.
Arrives
Sunday, Nov 1
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At a glance
- Condition
- New
- Pattern
- Long
- Model
- caf654ba-7b6b-4cf3-8c08-d957e2fc365f
- Dimensions
- 35.43"L x 11.81"W x 11.81"H
- Material
- Glass
- Tank Volume
- 21 gal
- Special Feature
- Rimless, Transparent, High Clarity Glass
- In the box
- Black Dense Foam Leveling Mat
Features 4
- Crafted with low iron 91% clarity glass and 45-degree corners The glass appears clearer with a minimal greenish or blue tint with uninterrupted edges, providing a more true-to-life representation of your aquatic environment.
- Constructed with German made silicone Bonded together using high quality adhesive rated for moisture and durability, our tanks give peace-of-mind for even the most dedicated aquarium enthusiasts.
- Leveling mat included Leveling mats add a non-slip surface to the base of your tank and are a necessity for adding support and stability for keeping your tank safe and secure from shifting or slipping.
- 90L Rimless Glass Tank Details: Dimensions - 35.43" x 11.81" x 11.81" (Length x Width x Depth) ; Glass Thickness - 8 millimeters ; Volume - 21 Gallons.
Description
Enhance your aquascaping journey with rimless aquariums designed for clarity and simplicity. UNS rimless aquarium tanks are constructed with 45° mitered edges bonded with high-performance unobtrusive silicone. This construction not only enhances the aesthetic appeal but ensures durability&strength. Precision 45° mitered edges create seamless, sleek joints for enhanced aesthetic appeal and structural integrity in our rimless aquariums. Each UNS tank features a discreet laser-etched logo, adding a touch of elegance without distracting from the aquarium's minimalist design. Crafted with 91% clarity Diamant glass, our tanks offer exceptional transparency, minimizing green tint for a crystal-clear view of your aquascape. Our rimless aquariums come in a wide variety of sizes and shapes, including cubes, rectangles, and nano tanks, catering to every aquascaping need. Rimless Aquarium Glass Lid Dual All-In-One Aquarium Mini CO2 Regulator Delta Canister Filter Blitz Canister Filter Titan LED Light
Specs 25
| Brand | Ultum Nature Systems |
|---|---|
| Material | Glass |
| Tank Volume | 21 gallons |
| Special Feature | Rimless, Transparent, High Clarity Glass |
| Product Dimensions | 35.43"L x 11.81"W x 11.81"H |
| Specific Uses For Product | Indoor |
| Style | Traditional |
| Color | Long |
| Item model number | caf654ba-7b6b-4cf3-8c08-d957e2fc365f |
| Manufacturer | Ultum Nature Systems |
| Brand Name | Ultum Nature Systems |
| Model Number | caf654ba-7b6b-4cf3-8c08-d957e2fc365f |
| UPC | 851302008696 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Global Trade Identification Number | 96 |
| Set Name | UNS Ultra Clear Tanks |
| Unit Count | 1 Count |
| Additional Features | Rimless, Transparent, High Clarity Glass |
| Vivarium Type | Aquarium |
| Pet Type | Fish |
| Target Species | Fish |
| Item Dimensions L x W x H | 35.43"L x 11.81"W x 11.81"H |
| Product Style | Traditional |
| Material Type | Glass |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Nov 1
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
absolutely beautiful tank
Pattern Name: Standard
Size: [60U] - 20.5 Gal - 23.62 x 14.17 x 14.17 in
it took a little while to get here I would say maybe a week and a half two weeks I can’t remember exactly the tank is absolutely beautiful. We really wanted this brand this is the one artificial intelligence told us to get. But they did not make it in the size that we needed we only had one area that we could put it. So we tried because we accidentally thought we were ordering the correct size and the wrong size came so in any event this is still beautiful but we had to return it I would highly recommend these tanks but it’s hard to find them
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Reviewed in the United States on July 11, 2026 by Taking Action!
looks great
Pattern Name: Long
Size: [60L] - 6.3 Gal - 23.62 x 7.87 x 7.87 in
i think a large part about aquarium review is longevity, which i cant review yet. but for the tank itself, it is very nice. the glass is clear. the whole thing looks very clean. its a nice tank and worth the premium imo.
Reviewed in the United States on December 7, 2025 by j
As advertised
Pattern Name: Standard
Size: [60U] - 20.5 Gal - 23.62 x 14.17 x 14.17 in
Came very well packaged. Tank is beautiful
Reviewed in the United States on July 26, 2026 by Amazon Customer
Amazing Quality!
Pattern Name: Long
Size: [90L] - 21.3 Gal - 35.43 x 11.81 x 11.81 in
Amazing Aquarium. High quality, and so clear! They packaged the tank very well! I love it so much
Reviewed in the United States on August 4, 2026 by GlamTrashMakeup
Gorgeous small aquarium
Pattern Name: Cube
Size: [25C] - 4 Gal - 9.84 x 9.84 x 9.84 in
This concerns the 4.1 gallon size aquarium, which arrived today. It's stated as a 10 inch cube, but that's approximate. It's actually metric, 25 centimeters along each edge. That 25 cm is correct, according to my tape measure. In inches, it's 9.84, if anybody cares about the difference, which I don't. The glass thickness is 5 millimeters, by my actual measurement. It was very well packed. When it arrived, one edge of the carton was dented, which worried me. No problem, though. Inside the carton, the aquarium was protected by a top cap, a bottom cap, and stiff edge protectors, all surrounded by a thick layer of styrofoam peanuts. So despite the dented carton, the aquarium was fine. Styrofoam peanuts are a nuisance because of static electricity, and they shed tiny particles, but they do a great job of protection, and that's what counts. The aquarium looks perfect. I examined it very carefully, all the sides, the bottom, all the edges, both visually, and by running my fingertips along the edges. No roughness or unevenness, no problems at all, that I could find. Flawless. When I was chasing tiny particles of styrofoam with a moist paper towel, I noticed the glass was squeaky clean. That's exactly what the whole aquarium looks like, a pristine cube of squeaky clean glass. It passed the initial exam with flying colors. I'll check it for leaks by adding a little distilled water now and then over the next couple days. Based on how well made it looks, I don't expect any problem, but if it leaks I'll edit this and let people know. I think my Betta is going to be a happy camper pretty soon.
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Reviewed in the United States on February 20, 2019 by Jeff Jordan
Beautiful tank!
Pattern Name: Nano
Size: [3N] - 3 Gal - 12.2 x 7.48 x 7.48 in
I got the 3 gallon nano tank for my shrimp. This is a beautiful tank and the quality is excellent. It showed up well packaged and on time. I’ve wanted this tank for a long time and it did not disappoint. UNS is worth the extra money. I got the UNS glass lid with clips and it’s perfect 😍
Reviewed in the United States on February 14, 2026 by Jessica Flynn
Amazing
Pattern Name: Long
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The tank size is perfect for a craw fish
Reviewed in the United States on August 26, 2026 by Lauren
Beautiful Rimless Nano Tank!
Pattern Name: Shallow
Size: [5S] - 2.5 Gal - 14.17 x 8.66 x 4.72 in
Beautiful rimless nano tank. Can’t wait to set it up! It came package well and arrived with no flaws. Next nano tank I’m buying from them again.
Reviewed in the United States on July 26, 2026 by MilitaryDad