UNS CO2 Cylinder Pro - 20LB

The UNS CO₂ Cylinder Pro (20LB) supports planted tanks that demand long‑term stability and a serious, uninterrupted CO₂ supply. With a massive, refillable reservoir of bulk gas, it keeps your system running on months of steady, rock‑solid pressure, giving your plants the consistency they need to grow fuller, healthier, and far more vibrant. It's a far superior choice to fluctuating paintball setups or disposable cartridges.

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.
• Lightweight brushed aluminum construction provides a clean, rust-free look that easily handles the humid environment inside an aquarium cabinet.
• The massive 20-pound capacity offers an unparalleled gas reserve, making it the perfect powerhouse choice for huge show tanks, fish rooms, or multi-tank setups.
• Official DOT3AL certification guarantees the cylinder meets strict safety and pressure standards for worry-free operation in your home.

Product Specifications

• Gas Volume Capacity: 20 lb / 13.4 L
• Regulator Compatibility: Fits all standard CGA320 threaded regulators (Note: While it technically fits both the Mini and Pro UNS styles, this size cylinder is most commonly paired with the UNS Pro Dual Stage Regulator for larger aquariums).
• Material: Aluminum
• Safety Certification: DOT3AL Certified
• 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.

• Cylinder Height (Without Valve): 600 mm / 23.62"
• Cylinder Weight (Empty / Without Valve): 10.8 kg / 23.80 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!

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 (20LB)

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.