Pump Power: 25W, max. Flow rate is 1500L/H, H-Max (lift height) up to 2.1m. Adjustable Water Flow: The adjustment knob makes it easy to adjust the flow rate. Submersible pump perfect for small to medium sized aquariums, tabletop fountains, water gardens, hydroponic systems, wells, ponds, etc. Reliable and durable motor produces low noise, giving you a quiet environment.