Red Sea Reefer Y Split Outlet Return Nozzle The Red Sea Reefer Y Split Outlet Return Nozzle is a genuine Red Sea return outlet accessory that splits return pump flow into two streams for improved water distribution in compatible REEFER aquariums. Y-Split Return Flow for REEFER Systems This nozzle helps spread return flow more evenly through the display instead of sending one narrow jet into the aquarium. It can be useful when improving circulation or reducing direct sand-blowing from a single return outlet. Compatibility Notes Designed for compatible Red Sea REEFER aquarium return outlets that use part number R42176. Confirm the aquarium model and outlet style before ordering. Installation Notes Turn off the return pump before removing or installing the nozzle. Fit the Y-split outlet securely onto the return connection, restart the pump and adjust the outlet direction while watching flow pattern and sand movement. What's Included 1 Red Sea Reefer Y Split Outlet Return Nozzle.