Resistant Aquarium Polyurethane Tubing - 4/6 mm by CO2Art

As expected. Plenty of tubing for future projects!

Unfortunately, many suppliers claim to sell tubing for CO2 but do not mention what the tubing is made of. The worst tubing for CO2 is silicone, followed by PVC and Vinyl. Polyurethane is superior as it won't harden/crack (and eventually leak gas) like other materials.

The media could not be loaded. I guess this is one of those products that we have to just trust for what they claim they can or will do for us compared to other products. It seemed like a good idea getting a green tubing but it's not, you can see how it stands out inside and outside the tank maybe someone will like it but I don't

Works and it's nice and thick.

Very good tubing! There are cheaper tubing that work as great.

Extremely hard to uncoil and stay straight. Feels nice and looks good tho.

I'm sure this is perfectly fine C02 tubing but nothing I did would make it uncoil. Soaked it in hot water and then hung it with some weights on the end. That kinda sorta worked.If you are connecting to a 5lb tank it won't be an issue but if you are connecting to some type of small setup that you keep on the level of the tank it's a bit of an issue but with some twisting of my bottle I was able to make it work.Also had an issue getting it on my diffuser. I had to taper my diffuser (made of plastic) a little bit and then I cut the end of the tubing at an angle, heated up the end of the tube and I was able to work it on the the diffuser.I can't say if this is typical of C02 since this is the first C02 tubing I have used.

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.

Unfortunately the 10ft was out of stock...arrived a day earlyWill have extra if I need to change