CAL Aqua Labs 13mm Influx X2 Inflow
The Influx X2 has a 13 mm tube diameter for 1/2" tubing and contains uniquely-placed multiple narrow slits spanning a longer length for more uniform flow across the water column. The width between the arch is approximately 4.3 cm and has a total length of 30 cm. It is designed for aquariums 20 gallons and larger that use 1/2" tubing for the canister filter outflow. Each X2 Influx pipe is supplied with two suction cups.