With a total length of approximately 35cm, the Influx X3 is one of the longest glass inflow pipes on the market. It has a 17 mm tube diameter for 5/8" (16mm ID) tubing and holds two suction cups for enhanced stability. This inflow also contains uniquely-placed narrow slits spanning a large portion of its length for more uniform flow across the water column. The width between the arch is approximately 6 cm. The X3 is suitable for aquariums 30 gallons and larger that use 5/8" tubing for the canister filter outflow. Each X3 pipe is supplied with two removable suction cups.