JIH 25 Feet Standard Airline Tubing Black with Suction Cups for Aquariums,Terrariums...

This is a great buy. They give you a lot of really good suction cups that actually hold the line well. The line itself is flexible which is very helpful and also it does not come loose. It easily can fit over air stones and does not come off without cutting it off. Low hassle to use. It also works with glass CO2 diffuser very well. Does attach to clear plastic check valves easily. I like that it is black and can be hidden easily in the tank. Also, you cannot see the algae on it and it always looks clean. Doesn't kink or come off like the clear hard plastic lines do. This feels more like rubber than plastic. Should have bought this first. Threw my old lines away. Highly recommended.

This black tubing comes off of the bubblers and anything it connects to. I have a salt water tank and they come off the bubblers about every week. I have a back flow preventer running up the back side of the aquarium and the black hose came off that in the middle of night and siphoned about 50 gallons of water out of the tank. Going back with the clear tubing, it has never failed me. Also two puffers dies as a result

Works great Love the suction, keeps the tube in place

You'd think clear tubing & suction cups would naturally look better. Not the case. Black virtually disappears. Looks way better than the clear tubing & suction cups. Also this particular tubing is by far more flexible & easy to work with. Which makes it even easier to conceal. The tubing & cups are both of good quality & I'm glad I purchased them at a good price too. Should've switched to black flexible tubing a long time ago.

Sometimes the suction power doesn't hold and they pop off in my aquarium but I can easily reapply them. They are a little harder than some of the suction cups. I'm used in the past, but they definitely hold the hose well.