Johnson Pump livewell pumps are available in 500 and 750 GPH flow rates and two different intake configurations of either straight or 90 degree, allowing multi-directional hose routing and easy installation. This aerator features easily removeable and interchangeable motor cartridges allowing you to adjust flow rates without having to remove the pump or any plumbing. The thermo plastic body design provides a small profile and the included 3/4" externally threaded Dura-Port connector prevents the pump housing from cracking due to hose overtightening.