ULTUM NATURE SYSTEMS UNS Cube Rimless Aquarium (16C / 20C / 25C / 30C / 40C)
Increasing in popularity, nano aquarium tanks are the miniature versions of standard sized aquariums. They’re ideal for small displays such as a store countertop, nightstand or console table. With horizontal space, they allow for increased depth perception and creativity as well as swimming room for smaller species of fish and shrimp.
- 45° Mitered Edges
- 91% Clarity with Diamant Glass
- High Quality German Silicone
- Laser Etched Logo
- Hand Crafted
- Black Nano-foam Leveling Mat Included
Sizes:
| Size | Dimensions (cm) |
|---|---|
| 16C | 16x16x16 |
| 20C | 20x20x20 |
| 25C | 25x25x25 |
| 30C | 30x30x30 |
| 40C | 40x40x40 |
FAQ
What makes the rimless design of this aquarium special?
The rimless design provides a clean, modern look and allows for better depth perception. It also simplifies the setup and gives more space for fish to swim in, making it ideal for small aquatic species.
Is the glass clarity sufficient for viewing fish behavior?
Yes, the tank features 91% clarity with Diamant Glass, which ensures clear visibility of fish movements and tank contents.
Does the included leveling mat help with stability?
Yes, the black nano-foam leveling mat helps keep the tank stable on uneven surfaces and provides a smooth base for placement.




Victoria Hamilton –
I bought the 20C model for my bedroom nightstand. The rimless design looks sleek and the clarity is excellent. My small shrimp swim freely and I can see their movements clearly. The leveling mat made setup easy and the tank stays steady even on a slightly uneven surface.
Sally Mathis –
The hand-crafted quality is evident in the smooth edges and laser etched logo. I placed it on my desk and it fits perfectly. The 25C size gives enough room for a few fish and shrimp without taking up too much space.
Sean Gray –
It’s a nice addition to my home office. The 30C model fits well and the 45-degree mitered edges look professional. I haven’t had any issues with stability or clarity yet, though I wish the size options included more variety.
Irene Payne –
I love the minimalist look. The black nano-foam mat is very useful. My small community of shrimp is thriving. The tank is easy to maintain and looks great in any small space.