FZONE Co2 Regulator CGA320 Side Open Cylinder - Dual Gauge

In this review of the FZONE Co2 Regulator CGA320 Side Open Cylinder, the bottom line is simple: this regulator is built for planted aquarium hobbyists who want precise, reliable CO2 dosing without complicated setup. The reviewer found the standout reason to buy is the large dual gauge arrangement and upgraded split-type 12 V DC solenoid that together make monitoring and automated control straightforward and safer than older AC-solenoid designs. The unit arrives with a bubble counter, check valve and tools, so it targets DIYers who prefer a complete, durable regulator ready for installation.

Key Features

• Dual big gauge: The 1.6 in dual gauge clearly shows both cylinder inner pressure and working pressure so readings are easy at a glance.
• Updated split-type DC solenoid: The 12 V DC split-type solenoid provides safer, more stable control compared with older AC models and integrates cleanly with timers or controllers.
• High precision structure: The fine-tuning knob and upgraded sealing materials let users dial CO2 to consistent output, reportedly down to about one bubble every three seconds.
• Bubble counter and check valve included: The supplied bubble counter doubles as a check valve to stop water backflow and lets you monitor flow rate visually.
• Class 1 construction: Hard aluminum alloy body with surface spraying and knurled knobs gives a durable, serviceable feel for regular aquarium use.
• Complete kit: All installation tools are included so setup for a DIY CO2 system is straightforward without needing extra parts.

Who It's For

This regulator is best for intermediate to advanced planted aquarium keepers who run pressurized CO2 and want tighter control over dosing; the clear dual gauge and fine-tuning knob suit aquascapers that care about stable plant growth. It is also a good fit for hobbyists who prefer a near-complete kit since the bubble counter, check valve and tools are included.

Less suitable for absolute beginners who want a fully plug-and-play solution with preconfigured settings, or for users who require a wireless or integrated controller interface out of the box. Those users should look for systems with built-in controllers or simpler disposable CO2 solutions.

Pros & Cons

Pros

• Large 1.6 in dual gauge makes pressure monitoring quick and accurate.
• 12 V split-type DC solenoid is safer and more stable than older AC-style solenoids.
• Bubble counter with check valve and included tools reduce the need for extra purchases.
• Durable aluminum alloy construction and knurled knobs feel high quality.

Cons

• Not a fully integrated smart controller - additional timers or controllers are needed for automation.
• The precise bubble rate requires careful initial tuning and periodic checks to maintain.

Specifications

Brand	FZONE
Model	CGA320 Side Open Cylinder
Gauge size	1.6 in dual gauge
Solenoid type	12 V DC split-type
Included accessories	Bubble counter with check valve and installation tools
Body material	Hard aluminum alloy with surface spraying
Warranty	One-year warranty and customer support

Our Verdict

The FZONE Co2 Regulator CGA320 side open cylinder is a solid choice for planted tank hobbyists who need precise, reliable CO2 control and appreciate a complete hardware kit. Its large dual gauge, upgraded 12 V DC solenoid and durable construction make it good value for DIYers willing to add a simple timer or controller for automation.

Frequently Asked Questions

Does the regulator include a bubble counter?
Yes, a bubble counter that also functions as a check valve is included with the regulator.

Is the solenoid AC or DC?
The unit uses an updated 12 V DC split-type solenoid rather than older AC models for safer operation.

What warranty is offered?
Fzone provides a one-year warranty and round-the-clock service for product-related concerns.