Boyu Pump Model SPA-1500A Flow rate: 1500 L/h Lifts 2.5 meters. Ceramic shaft - Freshwater or Marine Aquarium Ideal for ponds Consumption: 25w The non-corrosive ceramic shaft is suitable for fresh and sea water. All active parts are sealed in the chamber with good waterproof and high insulation. Reliable and easy to maintain. This combined structure design is easy to disassemble and clean. The data provided by the manufacturer such as l/h is at the pump level as it rises to Max elevation. The flow rate is minimal with the outlet provided by the manufacturer, all that in a straight line, extensions, curved elbows or other resistances that are placed will reduce the water flow rate. The pump or filter is completely submersible and must operate submerged For more power and life, periodically clean the drive propeller.