The 20 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.
Directions
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
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