The UNS Mini CO2 Dual Stage Regulator is a compact, all-in-one CO2 solution designed for planted aquarium hobbyists seeking professional-grade performance in a smaller footprint. Compatible with standard refillable CO2 cylinders, paintball cylinders, and UNS disposable cartridges right out of the box, it eliminates the guesswork of finding the right adapters while giving hobbyists the flexibility to choose the CO2 system that best fits their aquarium.

Best For
- Nano and small planted aquariums
- Aquarium stands with limited space
- First-time CO2 users
- Aquascapers using disposable, paintball, or refillable cylinders

Why Choose the UNS Mini Regulator?

Compact and Versatile: Designed with space-conscious setups in mind, the Mini Regulator delivers full CO2 functionality without taking up unnecessary room.
Dual-Stage Reliability: Includes dual-stage design, providing an extra fail-safe stage that prevents “end-of-tank dump” (a sudden release of CO2 when a cylinder is running low). This built-in feature keeps CO2 levels more stable and helps prevent sudden fluctuations.

The UNS Mini Regulator is ideal for hobbyists who want the benefits of pressurized CO2 without committing to a larger regulator setup. While compatible with standard refillable cylinders, its compact size and cylinder flexibility make it especially popular for nano aquariums, smaller cabinets, and aquarium setups with limited space.

Product Compatibility
- Standard CGA-320 CO2 cylinders (UNS Pro Cylinders)
- UNS Paintball Cylinders
- UNS Disposable CO2 Cartridges
- CO2-proof tubing
- Aquarium diffusers
- Inline diffusers
- Bubble counters

The UNS Mini Regulator can be paired with disposable cartridges, paintball cylinders, or standard refillable CO2 cylinders

What’s Included
- UNS Mini CO2 Dual Stage Regulator
- Standard CGA-320 Adapter (Pre-Installed)
- Paintball Adapter
- Bubble Counter
- Power Adapter
- Assorted O-Rings (extra replacements included)
- Installation Tools

Learn about other CO2 regulators and find the best solution for your planted aquarium. Shop All CO2 Regulators