UNS Pro CO2 Dual Stage Regulator – UNSCO2

The UNS Pro CO2 Dual Stage Regulator is designed for hobbyists looking for a long-term, professional-grade CO2 solution for planted aquariums. Featuring dual gauges for monitoring both working pressure and remaining cylinder pressure, it makes it easy to track CO2 levels and anticipate when a cylinder is running low. Included manifold blocks allow a single CO2 cylinder to supply multiple planted aquariums, making the Pro Regulator an ideal choice for expanding aquarium collections, fish rooms, and advanced aquascaping systems.

Best For
– Medium to large planted aquariums
– Long-term CO2 systems
– Hobbyists using refillable CO2 cylinders
– Multi-aquarium setups
– Aquascapers looking for more control and consistency

Why Choose the UNS Pro Regulator?

Dual-Stage Reliability:Dual-gauge regulators are sometimes referred to as dual-stage thanks to 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.
Expandable for Multiple Aquariums:The included bubble counter manifolds allow CO2 to be distributed across multiple planted aquariums from a single cylinder. Additional manifolds can be added as your aquarium collection grows (we recommend up to 8 splits).
Compatible with Standard Refillable Cylinders:Designed for use with CGA-320 CO2 cylinders ranging from 2.5LB to 20LB, providing a practical long-term solution with fewer refills and lower operating costs compared to disposable options.
Beautiful Design:Finished in an anodized Space Grey, the Pro Regulator offers a clean appearance that complements planted aquarium equipment and cabinetry.

The UNS Pro Dual Stage Regulator is intended for hobbyists ready to invest in a dedicated pressurized CO2 system. While larger than cartridge-based alternatives, it offers greater stability, longer refill intervals, and the flexibility to expand over time.

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

What’s Included
– UNS Pro CO2 Dual Stage Regulator
– CGA-320 Adapter
– 2 Bubble Counter Manifolds
– Power Adapter
– Assorted O-Rings (extra replacements included)
– Installation Tools