Liquid Force Sumo Max Flow Ballast Pump The Liquid Force Sumo Max Flow Pump is a fully submersible ballast pump that works with both fresh and salt water. The massive 4250 GPH flow fills over 200 pounds in only 60 seconds. Pump motor is fully sealed with dual rubber gaskets to ensure a long life. Features 4250 GPH flow fills over 200 lbs. in 60 seconds Fully submersible Works in both fresh and salt water Plug-n-play operation with all Liquid Force Sumo, StraightLine, and Big Bag ballast bags Sum