The UNS CO₂ Paintball Cylinder (16 Oz.) offers the perfect middle ground for hobbyists managing a beautiful nano aquarium or compact desktop scape. Lightweight, corrosion-resistant, and easy to conceal in small under-tank cabinets, this refillable tank delivers a long-lasting carbon supply without sacrificing valuable space around your display.
*Important Notice: All UNS CO₂ cylinders are sold and shipped EMPTY due to federal transport regulations. Before ordering, please verify that a local welding supply store, homebrew shop, fire extinguisher service, or paintball center near you fills or exchanges standard CGA320 aluminum CO2 tanks.
Key Features & Benefits
Manual On/Off Twist Valve: Dedicated pin valve controls output, giving you safe, reliable connection points during regulator installation and refills.
Premium AA6061 Aluminum: Lightweight, rust-free metal withstands humid cabinet air without corroding or staining cabinet surfaces.
Ultra-Compact 16 Oz. Capacity: Tucks away effortlessly into desktop stands or tight shelving displays while holding a long-lasting refillable reserve.
Cost-Effective Stability: Transitions your nano setup from expensive disposable cartridges to a stable, refillable bulk system.
Standard Paintball Threading: Connects directly to specialized paintball regulators without needing bulky custom adapters.
Nano / Desktop Setup: Pair the UNS Paintball Cylinder with the UNS Mini Dual Stage Regulator for tight cabinet spaces and small tanks under 20 gallons.
Standard / Pro Setup: Pair the UNS CO2 Cylinder Pros with the UNS Pro Dual Stage Regulator for medium-to-large display tanks requiring maximum long-term pressure stability.
What's Included
1x UNS CO₂ Paintball Cylinder - 16 Oz.
Frequently Asked Questions
1. Does the UNS 16 Oz. Paintball Cylinder arrive pre-filled with gas?
No. Federal shipping regulations prohibit the transport of pressurized gas cylinders. All cylinders are shipped empty and must be filled or swapped locally at a paintball shop, welding supply store, or homebrew supplier before use.
2. How long will a 16 Oz. paintball tank last on a nano aquarium?
On a standard nano or desktop tank (under 10 gallons) running 1 bubble per second for 8 hours daily, a 16 Oz. paintball cylinder typically lasts between 2 to 4 months before needing a refill.
3. Will this cylinder work with standard CGA320 regulators?
No, not directly. This cylinder features standard paintball threading. It is designed to pair directly with the UNS Mini Dual Stage Regulator (Pairing alternative CO2 regulators voids any warranty claims) or other paintball-compatible regulators (a CGA320 adapter is required to connect to full-size regulators).
Team Buce Plant Tips
Setting up pressurized carbon dioxide is far simpler than it appears! Explore our step-by-step guides to master your setup:
"Pretty cylinder with quality white paint. Great size for my nano setup. This paintball CO2 cylinder will make an easy and affordable introduction for my high tech system while looking great also."
— Chase M. (5/5)
Awesome.
"Just got this for my planted tank setup and overall, I’m really happy with it. It comes empty, so you’ll need to get it filled first, but that’s pretty standard with paintball-style CO2 tanks. What really stood out to me is how nice it looks in person super clean, minimal design, and it feels solid and well-made."
— Maycon C. (5/5)
Co2 tank
"Still new this upgrade and a lot more long lasting then DIY system I had."
— Ray R. (5/5)
love it!
"such a beautiful, clean look and easy to use!"
— Kayla (5/5)
Product seems good quality. I’m
"Product seems good quality. I’m still getting familiar with it. I’m just learning so starting out small is a little less intimidating."
— Tiffany C. (5/5)
Works as intended
"Works as intended"
— Zheng H. (5/5)
Perfect size and convenient
"A great size for someone who wants Co2 without relying on a disposable cartridge but doesn't have room for a larger tank."
— Sean A. (5/5)
As Expected
"Order arrived quickly, may need to look around for a shop that will fill the tank for you. No places around me had the correct tools to fill, so a scuba shop had to order an adapter so that they could fill it."
— Eli S. (4/5)
Matches my Delta 30
"Perfectly matches the aesthetic with my UNS Delta 30. The valve on the stem is a nice touch as well. I ordered a back up just incase a bottle runs dry."
— Carl N. (5/5)
Better than expected
"Amazing product, the quality was beyond expected, I cant be happier with it."
— Jeffrey M. (5/5)
Q&A
I don't understand as the image shows two tanks - which do you actually get? What is the height of the tank?
Hi Gabriel, Thank you for reaching out to us. There are two sizes of the UNS CO2 Paintball Cylinders, a 16oz and a 24oz. The taller one is the 24oz. Best Regards, Buceplant Team
