Product Overview
The UNS 90L 21.3 Gallon Ultra Clear Rimless Aquarium provides an elongated, long-format canvas engineered for horizontal aquascaping and active schooling species. Belonging to the Long series, it pairs an expansive length and width, offering a generous "runway" for river-stream layouts, panoramic Iwagumi scapes, and fast-swimming nano fish.
Key Features & Benefits
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91% Diamant Ultra-Clear Glass: Low-iron glass construction removes residual green tint distortion, ensuring true-to-life color reproduction for plants, fish, and hardscape.
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45° Mitered Edges & German Silicone: Precision-cut 45-degree mitered joints increase bonding surface area for clear German silicone, creating stronger structural seams and borderless viewing.
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Elongated Horizon Footprint: Expansive 35.43" length provides exceptional horizontal perspective, making it ideal for sweeping Iwagumi stone scapes and panoramic plant layouts.
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Signature Laser-Etched Branding: Features a clean, laser-etched UNS logo in the glass corner for an authentic finish that will not peel or fade.
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Acoustic Leveling Mat Included: Pre-cut dense foam leveling mat absorbs micro-vibrations, levels surface irregularities, and protects against glass stress points.
Model Dimensions & Specifications
| Feature |
Specification |
| Model |
UNS 90L Long Rimless |
| Dimensions (L x W x H) |
35.43" x 11.81" x 11.81" (90 x 30 x 30 cm) |
| Total Volume |
21.3 Gallons (81.0 Liters) |
| Glass Thickness |
8 mm |
| Glass Type |
91% Clarity Diamant Low-Iron Glass |
| Seam Construction |
45° Precision Mitered Joints with German Silicone |
| Branding |
Signature Laser-Etched Corner Logo |
What's Included
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1x UNS 90L Ultra Clear Rimless Glass Aquarium
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1x Custom-Fit Black Foam Leveling Mat
Hassle-Free Guaranteed Tank Delivery
We always guarantee safe delivery of our tanks. In the unlikely event that your tank arrives damaged or broken by the carrier, we will immediately ship out a replacement at no additional cost to you. Please send photos of the damaged tank in its original shipping box so that we can file a claim with the carrier on your behalf. Please allow an additional 2-3 business days in case of potential logistical delays.
Frequently Asked Questions
1. Why choose an elongated "Long" aquarium like the UNS 90L over a standard rectangular tank?
The 90L emphasizes horizontal length (35.43") relative to its height and width (11.81"), creating a dramatic panoramic frame. This extra horizontal distance provides additional swimming room for active schooling species and allows for sweeping, multi-focal point aquascapes.
2. What livestock is best suited for a 21.3-gallon long aquarium?
The 3-foot length makes the UNS 90L ideal for active, fast-swimming nano schooling fish (such as Tetras, Rasboras, Danios, or Rainbowfish), Corydoras, hillstream loaches, or large colonies of dwarf shrimp that benefit from expanded surface area.
3. Why is a leveling mat necessary for rimless aquariums?
Because rimless glass tanks rest directly on their base panel without a raised plastic frame, even a microscopic grain of sand on a stand can create concentrated stress points under weight. The included dense foam mat absorbs micro-vibrations and distributes weight evenly across the entire footprint to prevent glass stress cracks.
