Description
Product Overview
The Ultum Nature Systems (UNS) 3N 2.9 Gallon Ultra Clear Rimless Aquarium delivers a compact, museum-quality canvas perfect for nano aquascaping. Ideal for desktops, countertops, and small living spaces, nano aquariums offer an approachable, low-commitment entry into planted tanks and shrimp keeping.
Key Features & Benefits
91% Diamant Ultra-Clear Glass: Premium low-iron glass eliminates the green tint found in standard aquariums for true-to-life color accuracy.
45° Mitered Edges & German Silicone: Precision-cut 45-degree mitered joints double the bonding surface area for high-performance German clear silicone, forming stronger seams.
Golden Ratio Proportions: Scaled around classic aesthetic proportions to provide enhanced front-to-back depth, offering aquascapers essential room for hardscape perspective and plant layering in a nano footprint.
Signature Laser-Etched Branding: Features a clean, laser-etched UNS logo in the glass corner for an authentic, permanent finish that won’t peel or fade.
Acoustic Leveling Mat Included: Includes a pre-cut dense foam leveling mat to absorb micro-vibrations, level minor surface imperfections, and prevent structural stress cracks.
Model Dimensions & Specifications
Feature
Specification
Model
UNS 3N Nano Rimless
Dimensions (L x W x H)
12.2″ x 7.48″ x 7.48″ (31 x 19 x 19 cm)
Total Volume
2.9 Gallons (11.1 Liters)
Glass Thickness
5 mm
Glass Type
91% Clarity Diamant Low-Iron Glass
Seam Construction
45° Mitered Edges with Clear German Silicone
Branding
Signature Laser-Etched Corner Logo
What’s Included
1x UNS 3N Ultra Clear Rimless Glass Aquarium
1x Custom-Fit Black Foam Leveling Mat
Hassle-Free Guaranteed Tank Delivery
We guarantee the safe arrival of every aquarium. 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. Please retain all original shipping materials and provide photos of the damaged tank inside its original shipping box so our team can process a claim with UPS on your behalf.
Frequently Asked Questions
1. What type of livestock is ideal for a 2.9-gallon nano aquarium?
Due to its compact 2.9-gallon volume, the UNS 3N is best suited for low-bioload nano aquascapes. It also makes an exceptional desktop display for aquatic mosses and slow-growing epiphytic plants like Anubias Nana Petite.
2. Why is a leveling mat necessary for rimless nano aquariums?
Because rimless glass tanks rest directly on their bottom panel without a raised plastic perimeter frame, even microscopic debris or grain of sand on a stand can create concentrated stress points. The included dense foam mat absorbs vibrations and distributes weight evenly across the entire footprint to prevent glass fractures.
3. Can I use a glass lid on the tank?
Yes. Ultum Nature Systems offers precision-cut glass lids (available in Lid + Clip or Flush Fit options) to minimize evaporation and prevent livestock from jumping out.







