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Chihiros CO2 Regulator Pro Limited Edition

CO2 Systems

Chihiros CO2 Regulator Pro Limited Edition

The Limited Edition is the regulator Chihiros builds for people who are in this hobby for keeps. It carries the same dual-gauge, solenoid-switched architecture as the standard Pro, then adds a third cylinder thread — CGA320, W21.8 and G5/8 — so it mounts on practically any refillable bottle you will find, and accepts stackable manifold blocks that split one cylinder across several tanks. One bottle, one regulator, a whole fish room.

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Technical details

GaugesDual, colour-coded — cylinder + working pressure
Cylinder threadsCGA320, W21.8 and G5/8
Solenoid12 V DC, low power, timer/controller ready
Safety valveAuto-release above 100 PSI (≈ 6.9 bar)
Bubble counterIntegrated, with built-in check valve
ExpansionAccepts Chihiros manifold blocks for multi-tank splits
App controlVia Chihiros controller (sold separately)

In detail

The flagship regulator: three cylinder threads, colour-coded dual gauges, 12 V solenoid — and manifold-expandable to feed multiple tanks.

Fits the bottle you can actually get

Refill stations rarely ask what thread your regulator is. With CGA320, W21.8 and G5/8 all supported, this unit moves between cylinder standards without adapters biting into your budget — useful today, priceless when you swap suppliers.

Chihiros CO2 Regulator Pro Limited Edition — Fits the bottle you can actually get

Grows into a multi-tank system

Add Chihiros manifold blocks and the Limited Edition becomes a distribution hub: each block brings its own needle-valve-and-counter station, so every tank gets an independently tuned rate from the same bottle.

Chihiros CO2 Regulator Pro Limited Edition — Grows into a multi-tank system

The safety story, standard

Colour-coded dual gauges, an auto-venting safety valve above 100 PSI, a cool-running 12 V DC solenoid and a check-valved bubble counter — everything that protects your livestock and your gas budget is built in, and app scheduling is one controller away.

Chihiros CO2 Regulator Pro Limited Edition — The safety story, standard

Frequently asked questions

How is the Limited Edition different from the standard Pro regulator?

It adds a third cylinder thread — G5/8 alongside CGA320 and W21.8 — so it mounts on practically any refillable bottle, and it accepts stackable manifold blocks that split one cylinder across several tanks.

Can one regulator really run multiple tanks?

Yes. Each added Chihiros manifold block brings its own needle valve and bubble counter, so every tank on the line gets an independently tuned injection rate from the same cylinder.

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South Africa's leading pet and aquarium store since 2007 — with Chihiros lighting, CO2 and dosing gear available from Fourways, aquascapers at the counter, and easy ordering from anywhere in the country.

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