Features: 1.SAFETY: This pump is fully submersible with epoxy sealed motor. Each product has been submerged in water and tested with super high voltage to ensure the safety. 2.DOUBLE OUTLETS, ADJUSTABLE FLOW DIRECTION: The double outlets provide more even flow in the tank. A directional elbow is configured for you to adjust the flow direction at ease. 3.AERATING WATER: Oxygenation is very important to your fish. This pump comes with air venturi and air tubing to increase oxygen supply in your fish tank. 4.MOVING WATER: Your fish will have a more active life! This pump creates a nice underwater current that will give your fish to swim against! In the meanwhile, the moving water will bring fish excrement to the filter for a healthy environment in the aquarium. 5.HELPING HEATING: This circulating pump moves water around in the tank so that the heater keeps working until the water in the whole tank reaches the set temperature to avoid “cold spot” in your tank, thus your tank can get warm much faster. Specifications: 1. Material: plastic & magnet 2. Voltage:220-240V 50Hz 3. Power:18w 20w 30w 40w Caution: 1. We may send you a plug adapter(EU, US, AU, UK,etc) according to your country . If you need another type, please leave a message after ordering or contact us directly. 2. Please double comfirm your local voltage and frequency before you place the order.If not match,the pump would not work. 3. Damage is possible if the pump work without water. 4. There might be performance tolerance becuase of the tolerance of your local voltage and frequency.