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UNS Mini Dual Stage CO2 Regulator

Original price $ 157.99 - Original price $ 157.99
Original price
$ 157.99
$ 157.99 - $ 157.99
Current price $ 157.99

UNS Mini Dual Stage CO2 Regulator

**This item qualifies for free shipping**

The redesigned UNS Mini CO2 Regulator is now a dual-stage regulator with an added failsafe mechanism to prevent the end of tank dump. Paired with a fresh design, this CO2 regulator is sleek in appearance with its new space grey finish and takes up minimal space inside of the cabinet! 

Package Includes:

  • UNS Mini Dual Stage CO2 Regulator
  • Bubble Counter
  • Select Tools
  • Standard CGA-320 Adapter (pre-installed) 
  • Paintball Adapter
  • Power Adapter
  • Assorted Extra Washer O-Rings

There are two basic requirements for plants to grow through photosynthesis; nutrients and light. The most important nutrient for plant growth is carbon. Since carbon dioxide (CO2) is abundant in the atmosphere, plants simply draw their carbon directly from CO2 in order to photosynthesize and grow.  In an aquarium, CO2 levels are naturally very low and without any supplementation, submerged aquatic plants will not be able to grow properly. When CO2 is a limiting factor, plants cannot fully utilize all the available light to photosynthesize. This can allow algae to grow and compete with the plants for nutrients, further stunting plant growth. By introducing CO2 into the aquarium, plants can achieve healthy growth faster and therefore outcompete algae. 

The CO2 regulator is one of the most important aspects of any CO2 system. The pressure in a gas cylinder can be over 700 psi which is way too high for safe usage in any application. The regulator plays the crucial role of allowing just enough CO2 to dispense safely through the airline tubing, through the diffuser, and into your aquarium.  


  • CGA320 thread connection stem adapter included (fits onto standard US CO2 gas tanks)
  • Built-in solenoid allows you to turn the CO2 supply on and off during photoperiod
  • Compatible with the UNS Disposable CO2 cartridge.
  • Adjustable knob allows the ability to adjust working pressure
  • Comes with an included Paintball CO2 adapter and Bubble Counter!

What else do you need to get to supply CO2 to your aquarium?

- CO2 Tubing

- Diffuser

Check Valve

Additional Specifications:

Output pressure gauge: 0-50 PSI

Pressure relief valve: 51-53 PSI