Why You’ll Love It
For establishing a reliable aquarium CO2 system, hygger CO2 upgraded aquarium regulator with motorized valve for auto on/off function, features dual-stage adjustable pressure and expandable for multiple planted tanks, it includes a timer and bubble counters, and can be expanded up to 8 bubble counters.
Key Features
Expandable Manifold Design for Multiple Tanks
The hygger HC039 CO2 regulator kit includes two bubble counters, enabling simultaneous CO2 supply to two aquariums. Its innovative quick-connect fittings allow you to insert tubing directly. The expandable manifold design allows for adding up to 8 bubble counters in the future easily. The CO2 regulator is an ideal, scalable solution for multi-tank setups.

Dual Stage Adjustable Pressure & Flow Control
The hygger CO2 regulator features a dual-stage pressure regulation structure to ensure more stable output pressure. The main valve adjusts the output pressure, while the integrated needle valve allows for precise control of gas flow rate. Providing consistent CO2 delivery and maintaining optimal levels for aquarium plants.

Safe&Reliable Automatic Control
The advanced motorized valve is paired with a timer that enables fully automatic CO2 control on your set schedule. The HC039 motorized valve only activates during opening and closing, preventing overheating and ensuring energy efficiency in low power consumption.

Dual Gauge Design
The upgraded CO2 regulator is constructed from hard aluminum alloy, making it rust-resistant, sturdy, and durable for long-term use. The clear dual-gauge design monitors both cylinder and output pressure precisely. It features a quick-connect bubble counter with a built-in check valve to prevent water backflow, and a high-precision needle valve that can be fine-tuned to several bubbles per second.

All Necessary Accessories
Using professional sealing technology, the hygger CO2 regulator prevents gas leakage and stabilizes output pressure for worry-free use by a 2-year warranty. Includes all necessary accessories for easy installation.
Usage Tips
- The motor valve is not waterproof.
- The motor valve may produce sound when opening/closing, which is normal and doesn’t indicate a malfunction.
- If bubbles are present in the counter but the diffuser produces no bubbles for an extended period, check the hose ends and all other connections to prevent air leaks.


Specification
Package:
1 x Regulator
2 x Bubble counter
1 x Adapter
2 x Stackable Module
1 x Timer
1 x Hex wrench (3cm)
1 x Large sealing ring (spare)
2 x Small sealing ring (spare)
1 x User manual
















Works reliably. I like that I can program the schedule without the need for an outlet timer. I use it to supplement CO2 in 3 different aquariums. My tanks are looking vibrant.
Highly recommended. Very easy to set up with clear instructions. Worked flawlessly right out of the box. All connections were tight with no leaks. The built in timer allows you to set up and automatic schedule or manually open and close the regulator. All of the adjustments are very tight and allow you to fine tune the amount of co2 entering the tank. Amazing value for the price. I have ine other regulator from a different brand that was more expensive and does not feel anywhere near as high quality as the Hygger regulator. I would not hesitate to purchase another.
El mejor
Easy to use and does not have to clean the needle valve like others cool it adds just the right amount of co 2