FZONE Aquarium CO2 Regulator for CGA320 Side-Open Cylinders with Fine Flow Control

The FZONE Aquarium CO2 Regulator controls CO2 flow for aquariums and fits CGA320 side-open CO2 cylinders, with fine adjustment down to one bubble every 3 seconds.

• 12 DC split-type solenoid instead of an AC model — designed for safer, more stable operation.
• Fine-tuning structure — lets you adjust CO2 flow to one bubble in 3 seconds.
• Bubble counter with check valve — makes flow visible and helps prevent water from flowing back into the cylinder.
• Hard aluminum alloy body with a sprayed surface — provides the regulator’s stated construction and finish.
• Knurled pressure and fine-tuning knobs — give you textured control surfaces for adjustment.
• Installation tools included and a one-year FZONE warranty — covers setup tools and manufacturer warranty support.

This regulator is made for aquarium keepers who need to control and observe CO2 delivery from a compatible cylinder. Its metering controls, solenoid, and bubble counter bring adjustment and flow monitoring together in one regulator, while the check valve addresses water backflow toward the cylinder.

Which CO2 cylinder does the FZONE Aquarium CO2 Regulator fit?

It is designed to connect to a CGA320 side-open CO2 cylinder. Match your cylinder connection to CGA320 before choosing this regulator; the stated compatibility is specific to that cylinder fitting.

• Made for aquarium CO2 regulation.
• Uses a CGA320 cylinder connection.

How does the FZONE Aquarium CO2 Regulator control and show CO2 flow?

The fine-tuning control lets you set a slow flow as low as one bubble in 3 seconds, and the bubble counter lets you see the CO2 flow rate. The updated 12 DC split-type solenoid replaces AC models and is designed for safer, more stable operation. Upgraded sealing material is used to help prevent CO2 leaks.

• Fine adjustment supports low-rate aquarium CO2 delivery.
• The counter provides a visual reference for flow.
• The check valve helps stop water from flowing back toward the bottle.

What are the FZONE regulator’s construction and included items?

The regulator is made from hard aluminum alloy with a sprayed surface treatment. Its pressure and fine-tuning knobs have knurled surfaces, and installation tools are included to support setup.

• Hard aluminum alloy construction.
• Sprayed surface treatment.
• Knurled pressure and fine-tuning knobs.
• One-year FZONE warranty.

The FZONE Aquarium CO2 Regulator suits aquarium keepers using a CGA320 side-open CO2 cylinder who want adjustable flow with a visible bubble counter. Its cylinder fit, fine control, included installation tools, and one-year warranty define what it offers for aquarium CO2 regulation.

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