UNS CO2 Paintball Cylinder - 16 Oz.

When you are managing a beautiful nano aquarium or a compact desktop scape, finding space for bulk equipment can be a real challenge. The UNS CO₂ Paintball Cylinder (16 Oz.) offers the perfect middle ground for hobbyists who want a long-lasting, refillable carbon supply without sacrificing valuable space around their display.

Key Features & Benefits

• A dedicated manual on/off twist valve gives you complete control over the tank opening, so you never have to worry about sudden leaks during installation.
• The ultra-compact 16-ounce capacity offers a tiny footprint that easily tucks away into small under-tank cabinets, desktop setups, or tight shelving displays.
• Lightweight aluminum construction provides a clean, rust-free profile that safely handles the naturally humid air inside an aquarium stand.
• Transitioning to a refillable tank lowers your long-term operating costs and provides superior pressure stability compared to small disposable cartridges.

Product Specifications

• Gas Volume Capacity: 16 oz. / 0.5 L
• Regulator Compatibility: Fits standard paintball-style connections (Note: This cylinder was designed specifically to pair with the UNS Dual Stage Mini CO₂ Regulator for the best results. Pairing alternative CO2 regulators voids any warranty claims.)
• Material: Premium AA6061 Aluminum
• Working Pressure: 124 BAR / 1800 PSI
• Test Pressure: 207 BAR / 3000 PSI

Technical Specifications

Please note that gas depletion rates will always vary depending on your target bubble count, plant density, and tank size. Looking for a slightly larger tank option? Click here for the UNS CO2 Paintball Cylinder - 24 Oz.

• Cylinder Height: 215 mm / 8.5"
• Cylinder Weight (Empty): 0.82 kg / 1.8 lb

**Important Note: All UNS CO₂ cylinders are sold and shipped empty due to shipping regulations. Before ordering, we highly recommend checking your local area for a certified welding supply shop, homebrew store, or paintball shop that can fill standard CGA320 aluminum CO₂ tanks for you! (Note: This item does not include the UNS Mini Regulator pictured).

Sizing Recommendations

• The Mini Setup: UNS Paintball Cylinders + UNS Mini Dual Stage Regulator (Best for nano tanks, tight cabinet spaces, or desktop scapes).
• The Pro Setup: UNS CO2 Cylinder Pros + UNS Pro Dual Stage Regulator (Best for larger displays, high-tech demands, and maximum long-term pressure stability).

What’s in the Box?

• 1x UNS CO₂ Cylinder Pro (16 Oz.)

Team Buce Plant Tips

Fine-tuning your CO₂ setup can seem intimidating at first, but the process is far simpler than it appears. For a safe and reliable introduction, refer to our guide on How to Add CO₂ to Your Planted Aquarium. And if you’re curious about the science behind why CO₂ makes your buce, stems, and carpets thrive, explore The Mysteries of CO₂ in a Planted Tank Explained for a clear breakdown.