The 10 mm glass U-Tube allows hobbyists to easily run airline (preferably silicone) for CO2 or for general air supply over the rim of the aquarium without bending or creasing. Made of strong clear glass, which minimizes visibility of tubing.
• 10 mm size is suitable for rimless aquariums – most standard aquarium rims are wider than 10 mm and require the U-Tube 20 mm
• Ideal for aquarium airline or CO2 tubing
• Great for use with CO2 injection systems or bubblers
• An excellent addition to planted aquaria