Chihiros CO₂ Regulator Pro Limited Edition – Dual Stage Precision Regulator
The Chihiros CO₂ Regulator Pro Limited Edition is a high-end, dual-stage regulator designed for aquascapers who demand maximum stability, precision, and reliability. Built with premium materials and advanced pressure control, it ensures consistent CO₂ delivery—critical for healthy plant growth and stable aquarium conditions.
Key Features
Dual-Stage Pressure Regulation (Ultra Stable Output)
Maintains consistent working pressure even as cylinder pressure drops, preventing dangerous CO₂ spikes (end-of-tank dump).
Dual Pressure Gauges
Clearly displays both:
- Cylinder pressure
- Working/output pressure
for accurate monitoring and control.
Integrated Solenoid Valve (12V DC)
Allows automatic CO₂ shutoff (e.g. at night) when connected to a timer or smart controller—improving efficiency and safety.
Ultra-Fine Needle Valve Adjustment
Enables extremely precise bubble rate control, ideal for high-tech planted aquariums and sensitive aquascapes.
Built-In Bubble Counter with Check Valve
- Easily monitor CO₂ dosing visually
- Prevents water backflow into the regulator
High-Precision Safety Valve
Automatically releases pressure if it exceeds safe limits (~100 PSI), protecting your system.
Premium Limited Edition Finish
Upgraded design with colour-coded gauges and refined detailing for a high-end aesthetic.
Multi-Standard Cylinder Compatibility
Supports common CO₂ cylinder threads including:
- W21.8 (EU standard)
- CGA320
- G5/8
Specifications
- Type: Dual-stage CO₂ regulator
- Working Pressure: Adjustable (±0–4 bar)
- Gauges: Dual (cylinder + working pressure)
- Solenoid: 12V DC integrated (low heat)
- Bubble Counter: Built-in with check valve
- Safety: Pressure relief valve
- Material: Anodised metal body with brass internals
- Compatibility: Refillable CO₂ cylinders
Ideal For
- High-tech planted aquariums
- Aquascaping competition setups
- Medium to large tanks
- Users running inline diffusers or reactors
- Hobbyists wanting maximum stability and control
Why Choose the Pro Limited Edition?
CO₂ stability is one of the most important factors in a successful planted aquarium. The dual-stage design ensures consistent, safe, and precise CO₂ delivery, eliminating fluctuations that can lead to algae or plant stress.
Compared to single-stage regulators, this model offers significantly better control and reliability, making it a top-tier choice for serious aquascapers who want professional-level performance.
