AQUATEK CO2-Proof Tubing 16 Feet

Very thick nice tubing I do not and will never worry about CO2 seepage. Check valves also fit very snuggly into this tube. It's black coloration also makes it very easy to hide within your background making a nice and neat looking tank I haven't had to replace my lines at all and I had plenty in the package and along with some extra leftover.

This tubing works exactly as advertised. I've had it installed for a bit now, and there are zero leaks. My regulator keeps my lines around 50 PSI and that seems to hold up just fine. Be sure to cut yours at as close to 90° as you can get it. I used a Stainless Steel Single Edge Razor Blade to cut mine. It cut like butter, and left a nice clean edge very close to 90°.I would recommend boiling a mug of water in the microwave, and then holding the end (about the last inch or so) of the tubing in the water for about 30 seconds. The tubing becomes very flexible, and can then be put on very easily. I had no trouble getting this tubing on the Pollen Glass CO2 Diffuser after soaking the tubing in hot water, despite the glass stem being quite delicate. Just be sure to take care attaching hot tubing to glass pieces.I'm not sure the exact definition of "Kink-Free Design", but I was definitely able to collapse the tubing on itself, however this was only under a pretty extreme <1" 180° turn. I just used a slight bit more tubing to make the turn a little wider, and had no issues hooking it up to the AQUATEK 3-in-1 CO2 Diffuser's line holder, which some buyers of that diffuser seemed to complain about having issues with.In addition to the above two diffusers, I also used it with the following products, and have had zero leaks:- Fluval CO2 Bubble Counter- AQUATEK Premium Brass Check Valve- Pawfly 2-Way Air Valve Distributor

Very high quality kink free hard tubing. Would purchase again as needed. Note that it keeps its shape after the fact very well. If you put it on a barb and take it off to move to a different barb you’ll need to cut the old bit off. It will not return to its original shape much like softer pliable tubing often does. Not a problem, but will result in a poor seal if you’re not paying attention

For Co2 tubing it seems to work very well. I have had some hooked up to my Co2 setup for a little over 2 months now and there are no signs of failure. What I will say is that the tubing is pretty thick and getting this stuff on diffusers, especially glass ones, can be a little tricky. As a result of the thick tubing it is also much more stiff than regular airline tubing again making it more difficult to attach to co2 rigs. Overall though I would recommend it, after a little tricky installation it seems to be problem free!

Highly recommended source to buy this product. Truly reliable and great affordable product.

A lot of bad reviews saying it is too stiff...that is so it doesnt break down and dry out like it does with your normal line. I just used my lighter for a quick second to make it more plyable to attatch to my bubble counter. I bought this because I was tired of installing new line every 6 months. Plus, you shouldnt have to check your co2 line for anything dirty, if that is a problem for you then you might think about getting a new gas supplier or a new tank. Co2 has no build up or residue. Great Product, thank you!

It is of high quality and blends well especially if u r using a black background. The only downside is that its really hard to get the tubing on a diffuser or a bubble counter.

The tubing was exactly what I needed for adding CO2 to my aquarium. It does want to stay curled, but if you heat up a pot of water (doesn't have to be boiling) and place the tubing in it for a few seconds, it will easily straighten out.