The Chihiros CO2 Regulator Mate is designed for aquascapers who want a stable and precise CO2 supply
without hassle. With dual pressure gauges, integrated solenoid valve and bubble counter, you get everything
you need in one compact unit.
The regulator fits standard refillable CO2 cylinders with EU W21.8 thread and provides a smooth and
easily adjustable working pressure. The fine needle valve makes it simple to set an exact and stable
bubble rate, so your plants receive the CO2 they need without stressing fish and shrimp.
The built-in solenoid lets you switch CO2 on and off via a timer or smart plug, so CO2 is only added
during the lighting period. This improves both plant growth and safety in the aquarium.
Specifications
Model
Cylinder thread
Working pressure
Pressure gauges
Bubble counter
Solenoid
Input voltage
Chihiros CO2 Regulator Mate
W21.8 (EU standard)
Approx. 0–4 bar, adjustable
Dual gauge (cylinder & working pressure)
Integrated acrylic bubble counter with check valve
Built-in 12V solenoid (with 230V adapter)
AC 220–240 V, 50/60 Hz (EU plug)
Body material
Suitable for
Fine adjustment
Safety
Warranty
CNC-machined brass body
Refillable CO2 cylinders with W21.8 thread
Precision needle valve for stable bubble rate
Tight, reliable sealing and controlled working pressure
2 years
Always mount CO2 equipment securely and check regularly for leaks using soapy water. Never run CO2
24/7 without sufficient surface movement, and always monitor fish and shrimp for signs of stress.
