Dophin · Rimless
GT3000 Series Glass Tank
- Volume
- 14.8–57 L
- Dimensions (L × W × H)
- 30–50 cm long
A budget nano or small scape where you plan to choose your own light, filter and CO2.
5 models
UNS · Rimless
UNS Prism Glass Tank with Flush Lid
Tall rimless cubes that come with a mitred glass lid sitting flush with the top. The lid has a vent hole and grips, and it cuts evaporation and keeps jumpy fish in.
Updated
12.1–37 L3 models
Will it suit my tank?
litres
Best for
Small cube aquariums where you want a lid that disappears, such as a betta, shrimp or specimen-plant nano.
Worth knowing
The lid traps heat and moisture, so keep an eye on condensation and temperature under a strong light.
What stands out
- Three sizes: 20TM, 25TM and 30TM (about 12 L to 37 L)
- Flush-fitting glass lid with a central vent hole included
- Tall proportions for vertical planting
- 5 mm glass with a stabilising foam mat included
Models and specs
| Model | Volume | Dimensions (L × W × H) | Glass |
|---|---|---|---|
| 20TMUNS20TM | 12.1 L | 20 × 20 × 30 cm | 5 mm |
| 25TMUNS25TM | 22 L | 25 × 25 × 36 cm | 5 mm |
| 30TMUNS30TM | 37 L | 30 × 30 × 45 cm | 5 mm |
- Brand
- UNS
- Edges
- Mitred corners
- Lid
- Flush mitred glass lid with vent hole and grips
- Included
- Foam stabilising mat
Figures from Glass Aqua's product listing. Makers revise products, so check the current figures before buying. Photos supplied by the brand or its distributor.
Compare with
Browse all aquariums
Dophin · Rimless
GT6000 Cube Glass Tank
- Volume
- 15–18 L
- Dimensions (L × W × H)
- 25 cm long
A shrimp or nano cube with mosses, small epiphytes and a carpet, where the taller GT-6002 gives a little more room for stem plants.
2 models
Oase · Rimless
ScaperLine
- Volume
- 75–250 L
- Dimensions (L × W × H)
- 60–100 cm long
Aquascapers who want an open-top, show-quality tank and cabinet that match, and already know which light and filter they want.
3 models
SunSun · Rimless
HEK Series Open Aquarium
- Volume
- 11–127 L
- Dimensions (L × W × H)
- 30–77.5 cm long
A first planted nano or small scape where you want tank, light and filter in one purchase.
5 models
Frequently asked questions
Quick answers about the UNS Prism Glass Tank with Flush Lid, drawn from its specs.
How many litres is the UNS Prism Glass Tank with Flush Lid?
20TM: 12.1 L, 25TM: 22 L, 30TM: 37 L. Expect about 15 to 20 percent less water once substrate and hardscape are in.
What filter do I need for the UNS Prism Glass Tank with Flush Lid?
For the 20TM (12.1 L), look for a filter rated at roughly 60–120 L/h. Our filter matcher lists the ones that fit.
Who is the UNS Prism Glass Tank with Flush Lid best for?
Small cube aquariums where you want a lid that disappears, such as a betta, shrimp or specimen-plant nano.
Is there anything to watch out for with the UNS Prism Glass Tank with Flush Lid?
The lid traps heat and moisture, so keep an eye on condensation and temperature under a strong light.
What are the alternatives to the UNS Prism Glass Tank with Flush Lid?
Other aquariums worth comparing: Dophin GT3000 Series Glass Tank, Dophin GT6000 Cube Glass Tank, Oase ScaperLine. Add any of them to the compare table to see the specs side by side.