The Reef Pump Compact 500 is a compact and efficient aquarium pump designed for both marine and freshwater environments. With its base feed design, it can operate effectively in low water conditions, making it ideal for water changes or transferring water between tanks. The pump features ten adjustable speed settings allowing precise control over flow rates from a minimum of 132 gallons per hour to a maximum of 162 gph. It operates quietly and includes soft start functionality to prolong the life of its internal components.