Now that you've built your own CO2 regulator, it's time to gather all the parts to complete the system and start injecting CO2 into your planted tank. We sell high quality CO2 Resistant Tubing that does not kink and is best used for push-to-connect type fittings. We also have the industrial grade clippard check valves to prevent water from back flowing and damaging your custom made co2 regulator. Also checkout our other CO2 accessories such as bubble counter, perma-seal for stopping co2 leaks and many more.