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CO2 Regulators and Cylinders

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 like the one from Tunze 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.

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