UNS Ultra Clear Rimless Tank 20.5GAL - Low Iron Clarity

In this review the UNS Ultra Clear Rimless Tank (20.5GAL) is evaluated for aquascapers and hobbyists who want a minimalist, high-clarity display tank. The bottom line: this tank stands out for its low-iron glass and clean 45-degree mitered edges, making plants, rockwork and livestock appear more true-to-life than standard float glass. For anyone creating a planted or display aquarium where visual clarity and seamless corners matter, this tank delivers the single biggest benefit of improved color fidelity and edge-to-edge transparency.

Key Features

• Low-iron ultra clear glass: The 91% clarity glass reduces the greenish tint of float glass so colors and details look more accurate and vivid.
• 45-degree mitered corners: Seamless, uninterrupted edges create a minimalist presentation that keeps attention on the aquascape, not the silicone joints.
• German-made silicone construction: High-quality bonding rated for moisture and durability offers reliable strength for long-term use.
• Golden ratio dimensions: The tank is designed with pleasing proportions to suit aquascaping composition and room placement.
• Leveling mat included: The supplied mat gives a non-slip base and helps compensate for minor stand imperfections to protect the glass.
• Compact footprint: Measuring 23.62in x 14.17in x 14.17in, it fits smaller stands or countertops while still holding a substantial planted layout.

Who It's For

This tank is ideal for hobbyists focused on aquascaping, planted tanks, or display aquaria where visual clarity and clean edges are priorities. Its low-iron glass and mitered corners benefit anyone wanting accurate color rendition and a gallery-style look.

Those who need unusually large capacities, integrated filtration or predrilled plumbing should look elsewhere; this model is a bare rimless aquarium that prioritizes aesthetics and build quality over included hardware features.

Pros & Cons

Pros

• Exceptional glass clarity with reduced green tint for truer color and improved viewing.
• Clean 45-degree mitered edges produce a seamless, minimalist presentation favored by aquascapers.
• Durable assembly using German-made silicone and high-quality adhesive offers confidence in long-term use.
• Included leveling mat adds practical stability and protection for the glass base.

Cons

• As a bare rimless tank it does not include filtration, lighting, or plumbing, so additional purchases are required for a fully functioning setup.

Specifications

Capacity	20.5 GAL | 77.7 L
Exterior dimensions	23.62in x 14.17in x 14.17in
Metric dimensions	60 x 36 x 36 CM
Glass thickness	6 mm
Glass type	Low iron ultra clear (approx. 91% clarity)
Corner style	45-degree mitered edge
Included accessories	Leveling mat

Our Verdict

The UNS Ultra Clear Rimless Tank is a strong choice for aquascapers and display aquarium enthusiasts who value clarity, proportion and refined edges. It represents good value for those who will source their own filtration and lighting, because the low-iron glass and mitered corners materially improve the presentation and color fidelity of planted and display setups.

Frequently Asked Questions

Does this tank come with a lid or hood?
No, this model is sold as a bare rimless aquarium and does not include a lid, hood, filtration or lighting.

Is the glass significantly clearer than standard glass?
Yes, the low-iron ultra clear glass has higher clarity and less green tint than typical float glass, improving color accuracy.

Is a stand or mat required?
A sturdy stand is required for support; a leveling mat is included to help compensate for minor unevenness and protect the base.