CO2 Regulators and Cylinders for Aquariums

Many advanced aquarists use CO2 injection to nourish coral or freshwater plants. A CO2 system requires a CO2 cylinder and CO2 regulator. The CO2 tank stores the CO2. Marine Depot sells a 5lb CO2 tank and a 10lb CO2 tank.

The CO2 regulator attaches to the CO2 tank and regulates the flow of CO2 . Pressure gauges display tank pressure and the pressure of the CO2 flow. The main regulator valve sets the rate of CO2 injection, while the needle valve allows fine tuning. A bubble counter allows for manual measurement of CO2 .

CO2 tanks are highly pressurized, so be sure to read and follow the regulator instructions closely. The main CO2 and regulator valves must be opened in the correct order.
13 Results
Milwaukee Dual Gauge CO2 Regulator w/ Solenoid

Milwaukee Dual Gauge CO2 Regulator w/ Solenoid

Needle Valve For CO2 Regulator

Needle Valve For CO2 Regulator

Tunze CO2 Dual Gauge Regulator

Tunze CO2 Dual Gauge Regulator

Fluval Pressurized CO2 Kit - 45g

Fluval Pressurized CO2 Kit - 45g

Fluval Pressurized Disposable CO2 Cartridge (45g) - 3 pack

Fluval Pressurized Disposable CO2 Cartridge (45g) - 3 pack

Fluval Pressurized CO2 Kit - 95g

Fluval Pressurized CO2 Kit - 95g

AquaMaxx Nano CO2 Regulator
last chance

AquaMaxx Nano CO2 Regulator

Fluval Mini Pressurized Disposable CO2 Cartridges (20g) - 3 pack

Fluval Mini Pressurized Disposable CO2 Cartridges (20g) - 3 pack

Primus CO2 Regulator - Dennerle

Primus CO2 Regulator - Dennerle

CO2 Quantum Regulator - Dennerle

CO2 Quantum Regulator - Dennerle

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