The Red Sea CO2 Pro System is a complete, efficient and user-friendly system to maintain a desired level of CO2 in planted aquariums from 10 to 125 gallons (40 to 500 Liters).

The CO2 Pro System Includes:

• Full featured, dual gauge, safety Regulator that is supplied in versions suitable for connection to standard refillable CO2 cylinders and disposable CO2 cylinders
• Independent, high precision, in-line, Needle Valve that can be located in a convenient location on the side of the aquarium and be set to stable flow rates as low as 4 bubbles per minute.
• Highly efficient CO2 Reactor 500 that includes an adjustable flow water pump and can dissolve over 180 bubbles of CO2 per min
• Bubble Counter with integrated check valve
• Real time CO2 Indicator arrow
• Does NOT come with CO2 bottle or tubing