CO2 Art CO2 Resistant Aquarium Polyurethane Tubing Clear 3 m / 10 ft

This tubing is incredibly rock hard which prevents it from forming a good seal. I bought this because I needed a longer hose and I had a good experience with CO2Art's regulators so I thought this would be equally high quality. Nope. Most of my CO2 leaked out the ends of the tubing without making it into the diffuser. I put my old Fluval tubing back on and no leaks whatsoever. Definitely would not recommend. If you do purchase this, be sure to check it real good for leaks at the connection points before trusting it to do its job.