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Advanced Check Valve Check valves are used to prevent liquid backflow on an airline or CO2 tubing. When using either an air pump or CO2 system, it is important to use a check valve to make sure water doesn't leak from your aquarium and into your air pump or CO2 regulator. Water or any liquids can cause damage to an air pump as well as the needle valve of a regulator -Solid construction -Push in fitting -Fits any standard 3/16" airline or CO2 tubing -Designed for aquarium use What else do you need to get to supply CO2 to your aquarium? - CO2 Tubing - Diffuser - Regulator *This item qualifies for free shipping!*
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🇺🇸 Ship from USA · On Agora since 2025
$9.99