Growbro CO2 Regulator – Regulator with solenoid valve and automatic switch, tool-free

Growbro CO2 Regulator

Regulator for Growbro disposable CO2 bottles (ref. 600558). It installs without tools and features a solenoid valve and automatic switch, which opens the flow when it detects low CO2 concentration in the room.

What it offers

• Tool-free installation on the Growbro bottle
• Integrated solenoid valve
• Automatic switch: opens when low concentration is detected
• Turns a loose bottle into a dosing system

What we cannot confirm

In the interest of transparency: the manufacturer does not publish the solenoid valve voltage, working pressures, or thread type for this regulator. We are not going to make up that data. It is designed and guaranteed for Growbro 600558 bottles; if you want to mount it on another cylinder, consult us before buying.

Why compressed CO2 wins in medium-sized rooms

In the range of 10 to 30 m³, compressed gas is usually a better option than a propane generator for one very specific reason: it does not add heat. Combustion puts as much heat into the room as the burner has power, which forces you to extract more—and extracting more expels the newly supplied CO2. Compressed gas avoids that cycle.

⚠️ Safety: CO2 is not harmless

CO2 at high concentrations is dangerous for people. Normal air is around 420 ppm; an enriched room operates at 1,200-1,500 ppm and above about 5,000 ppm there is a real health risk. Never enter a room with active dosing without ventilating first. Cut off the supply, extract for a few minutes, and enter afterwards. Before mounting or dismounting the regulator, make sure the valve is closed and the circuit is depressurized.

Clarification on refills

Growbro bottles are disposable and recyclable: they are not refilled. We also do not have refillable 6 or 10 kg bottles or a refill service. When the cylinder runs out, it is recycled and a new one is purchased.

Note on weight

Some distribution sheets list 0 kg for this reference, which is a catalog error. The weight we apply is an estimated shipping weight and realistic.

At GrowIndustry we only work with proven quality products and trusted brands.

Every item goes through a check before shipping to make sure it arrives in perfect condition and ready to use.

Your satisfaction is our priority.

1. Make sure the bottle valve is closed before starting.
2. Screw the regulator onto the Growbro bottle (ref. 600558) by hand, without tools and without forcing it.
3. Connect the outlet to the diffusion line and place the emission point above the crop.
4. Power the solenoid valve and check that the automatic switch toggles correctly.
5. Open the bottle slowly and check with soapy water that there are no leaks at the connection.
6. Before entering the room, cut off the supply and ventilate for a few minutes. To disassemble, close the valve and depressurize first.