Seachem U Tube
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Ideal for aquarium airline or CO2 tubing 10 mm size is suitable for rimless aquariums Great for use with CO2 injection systems or bubblers The 10 mm glass U Tube allows you 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. Compatible with 6 mm (1/4") - Standard Airline Tubing. Rinse glassware with warm water. Trim and attach desired tubing (Compatible with 6 mm (1/4") - Standard Airline Tubing). To attach tubing to glassware, wet the inside of the tubing with water at the attachment point and carefully slide tubing over glass. The use of other lubricants is not advisable as these usually make the tubing slide off of the glassware too easily. To avoid breakage when removing tubing, do not pull tubing off of glassware. Instead, cut tubing carefully along the attachment length to release the glassware. Install check valve, if desired, (not included) inline with tubing outside of the aquarium Mount your U Tube over the rim of your aquarium in the desired location