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UNS 40A - 16.9 Gallon Dual AIO Rimless Aquarium
Product Overview
The UNS 40A Dual AIO is a 16.9-gallon rimless cube aquarium featuring 91% ultra-clear glass and an integrated 3-chamber rear filtration system. By concealing equipment behind a sleek black acrylic wall, this all-in-one setup eliminates external hoses and canisters to deliver a clean, plug-and-play aquarium. Designed for maximum versatility, the 40A Cube offers a panoramic window ideal for high-energy planted aquascapes and nano saltwater reef setups.
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.
- Integrated Triple-Chamber Filtration: Native rear sump conceals your mechanical, biological, and chemical filtration out of sight.
- Customizable Flow Control: Includes a submersible return pump with pre-installed tubing and an adjustable trumpet nozzle to direct water movement.
- Acoustic Leveling Mat Included: Pre-cut dense foam mat cushions the bottom panel, absorbs micro-vibrations, and prevents stress cracks.
Model Specifications
| Feature | Specification |
|---|---|
| Model | UNS 40A Dual AIO |
| Dimensions (L x W x H) | 15.75" x 15.75" x 15.75" (40 x 40 x 40 cm) |
| Total Volume | 16.9 Gallons (64.0 Liters) |
| Tank Style | Cube All-In-One (AIO) |
| Glass Type | 91% Clarity Diamant Low-Iron Glass |
| Seam Construction | 45° Mitered Joints with German Silicone |
| Included Return Pump | UNS Sigma 800 Submersible Pump (16W) |
Rear Chamber Accessory Compatibility
- Chamber 1 (Intake): Compatible with the Dual AIO Intake Guard paired with either a Filter Sock Conversion Kit or AIO Media Tower.
- Chamber 2 (Media / Reactor): Sized specifically to fit the UNS Mini Protein Skimmer for marine setups.
What's Included
- 1x UNS 40A Ultra Clear Glass Tank with Integrated Back Chamber
- 1x Pre-Cut Black Leveling Mat
- 1x Back Chamber Acrylic Lid
- 1x Media Riser Tray
- 1x Coarse Mechanical Filter Sponge
- 2x UNS Bio Blocks (Biological Media)
- 1x UNS Sigma 800 Submersible Water Pump (16W) with Hose
- 1x Adjustable Outflow Trumpet Nozzle
Frequently Asked Questions
1. Do I need a separate filter for the UNS 40A Dual AIO aquarium?
No. The 40A Dual AIO includes a complete 3-chamber rear filtration system equipped with a 16W return pump, mechanical sponge, media riser tray, and two UNS Bio Blocks. You only need to add an aquarium heater and light fixture.
2. Can I use the UNS 40A Dual AIO for a marine or saltwater reef tank?
Yes. The rear filtration chambers are dimensioned to house marine-specific equipment, such as the UNS Mini Protein Skimmer or custom media towers, making it an excellent plug-and-play platform for nano reef aquariums.
3. Why is a leveling mat necessary for rimless aquariums?
Because rimless glass tanks rest directly on their bottom panel without a raised plastic frame, microscopic imperfections or sand grains on a stand can create concentrated stress points. The included foam leveling mat absorbs micro-vibrations and distributes weight evenly to prevent stress cracks.