UNS Rimless Standard Glass Aquarium — photo 2 of 6

UNS Rimless Standard Glass Aquarium — photo 3 of 6

UNS Rimless Standard Glass Aquarium — photo 4 of 6

UNS Rimless Standard Glass Aquarium — photo 5 of 6

Rimless Aquariums

UNS Rimless Standard Glass Aquarium

Q: Which UNS rimless tank size should I choose?

For desktop scaping, the 20C (20 × 20 × 20 cm, 8 L) and 45U (45 × 28 × 28 cm, 35 L) are compact and easy to manage. For a classic nature aquascape, the 60U (60 × 36 × 36 cm, 78 L) and 90P (90 × 45 × 45 cm, 182 L) give the depth front to back that planted layouts need. The 120P, 150U and 180U run from 300 to 648 litres for large display tanks.

45° Mitered Edges91% Diamant GlassLeveling Mat Included

Ultum Nature Systems rimless glass aquariums are meticulously crafted for aquascapers who demand unmatched optical clarity and pristine minimalism. Engineered with 91% clarity Diamant ultra-clear glass, each panel is joined with precision 45° mitered beveled edges that maximize bonding strength while eliminating the green tint of traditional float glass. From the desktop 20C cube to the panoramic 180U exhibition tank, every aquarium includes a laser-etched UNS logo and a high-density black leveling mat.

Size: 20C (8L)

View at Jungle Aquatics

Live pricing and stock on jungleaquatics.com — purchase through Jungle Aquatics and collect from the Broadacres showroom in Fourways.

Technical specifications

Available models	20C · 20T · 45U · 60U · 90P · 120P · 150U · 180U
Glass type	91% Diamant Ultra-Clear Low-Iron Glass
Glass thickness	5 mm (20C, 20T, 45U) to 15 mm (150U, 180U)
Edge finishing	Precision 45° Mitered Beveled Edges
Silicone bonding	High-strength German structural silicone (rimless)
Volume range	8 Litres (20C) to 648 Litres (180U)
Suitable for	Planted freshwater, shrimp, marine and reef aquariums
Included in the box	Aquarium tank, high-density black leveling mat

Always install on a completely flat, level aquarium cabinet using the included black foam leveling mat.

Which UNS rimless tank size should I choose?

For desktop scaping, the 20C (20 × 20 × 20 cm, 8 L) and 45U (45 × 28 × 28 cm, 35 L) are compact and easy to manage. For a classic nature aquascape, the 60U (60 × 36 × 36 cm, 78 L) and 90P (90 × 45 × 45 cm, 182 L) give the depth front to back that planted layouts need. The 120P, 150U and 180U run from 300 to 648 litres for large display tanks.

UNS Rimless Standard Glass Aquarium: sizes, dimensions and volumes

Model	Profile	Dimensions (L × D × H)	Glass	Volume
20C	Cube	20 × 20 × 20 cm	5 mm	8 L
20T	Tall	20 × 20 × 30 cm	5 mm	12 L
45U	Standard	45 × 28 × 28 cm	5 mm	35.2 L
60U	Standard	60 × 36 × 36 cm	6 mm	77.7 L
90P	Standard	90 × 45 × 45 cm	10 mm	182.2 L
120P	Standard	120 × 50 × 50 cm	12 mm	300 L
150U	Standard	150 × 60 × 60 cm	15 mm	540 L
180U	Standard	180 × 60 × 60 cm	15 mm	648 L

Dimensions are external, in centimetres. Volumes are the manufacturer's brim-full estimates; a scaped tank holds less.

Precision 45° Mitered Beveled Edges

Unlike standard 90° butt joints, UNS 45° beveled seams expand the silicone contact area for superior structural integrity while providing an unobstructed panoramic view into your aquascape.

91% Diamant Low-Iron Optical Purity

Engineered with premium low-iron glass that transmits 91% of natural light, ensuring true color rendering for delicate red stem plants, vibrant schooling fish, and subtle hardscape textures.

Laser-Etched Insignia & Leveling Mat Included

Every tank features a laser-etched Ultum Nature Systems logo in the upper corner as a hallmark of authenticity, and includes a custom-cut high-density black foam leveling mat in the box.

Uncompromising Craftsmanship

Built for the Dedicated Aquascaper

Every Ultum Nature Systems creation combines minimalist aesthetic discipline with field-tested biological performance.

Diamant Ultra-Clear Glass

91% light transmission with laser-cut 45° beveled corners and ultra-clean German silicone bonding.

Cascading Waterfall Filtration

Foresta paludariums feature integrated multi-stage chamber filtration and ultrasonic misting hidden behind the planting wall.

Volcanic Soil Chemistry

Active buffering to a slightly acidic pH of about 6.8, with lower water hardness, to fuel lush plant carpets and delicate aquatic life.

Black Satin Aquascaping Tools

25 cm scissors and tweezers in a black satin finish, with sharp blades and serrated tips for effortless plant insertion and delicate trimming.

UNS Rimless Standard Glass Aquarium: frequently asked questions

What are the dimensions and volume of the UNS 60U?

The UNS 60U measures 60 × 36 × 36 cm, is built from 6 mm glass and holds about 77.7 litres filled to the brim. The smaller UNS 45U is 45 × 28 × 28 cm (35.2 litres) and the larger UNS 90P is 90 × 45 × 45 cm (182.2 litres). The size guide on this page lists every model.

What do the numbers and letters in UNS tank names mean?

The number is the length of the tank in centimetres and the letter is its profile. C is a cube, T is a tall tank, and U and P are standard rectangular profiles. A UNS 60U is therefore a 60 cm standard tank and a UNS 20C is a 20 cm cube.

Why are 45° mitered edges better than standard 90° glass corners?

45° mitered edges increase the bonding surface area by over 40% compared to flat butt joints, creating a significantly stronger physical bond while keeping the silicone seam virtually invisible from front and side viewing angles.

Do I need to purchase a separate leveling mat?

No. Every UNS rimless glass tank includes an authentic high-density black foam leveling mat tailored specifically to the base dimensions of the aquarium. The box contains the tank and the mat only, so a light, filter, lid and cabinet are chosen separately.

How do I clean and maintain the Diamant glass panels?

Use a soft microfiber cloth and clean RO/distilled water on the exterior. For interior algae removal, use a dedicated acrylic or stainless steel razor scraper designed for rimless glass, taking care near the silicone corners.

Are UNS rimless aquariums available in South Africa?

Yes. Jungle Aquatics stocks Ultum Nature Systems rimless aquariums in South Africa. Check live stock and pricing for each size on jungleaquatics.com, then collect your tank from the Broadacres showroom in Fourways, Johannesburg.

Stocked & supported by Jungle Aquatics

South Africa's premier aquatic and exotic pet destination since 2007 — with the Ultum Nature Systems range on display and available for collection in Fourways, plus expert scape consultations at the counter.

Visit or contact the store View live stock →