Model Voltage Frequency Watt Max Output Plug AQ918 220-240V 50~60Hz 2.5W 3L/min US plug AQ928 220-240V 50~60Hz 5W 2 X 3L/min US plug Specification: Color: Black Shell Material: ABS Plastic Movement: All copper movement Cup and non-slip base: Rubber Size: (L x W x H) AQ918: 110mm x 85mm x 65mm AQ928: 160mm x 95mm x 80mm Model: AQ918(Single hole) AQ928(Double hole) Package Included: 1 x Aquarium Air Pump (Will send plug adapter according your shipping receiving country) Instructions For Use: 1.Connect pump to air stone of filter via air pipe. 2.Plug into 220-240 volt power point. 3.To prolong pump life, replace air stones regularly. 4.Never allow pump to come into contact with water. Tips: The working principle of oxygen pump is to use air vibration foam to increase the surface area of water contact with the air, so that the water dissolved oxygen in the air is more, to achieve the purpose of water dissolved oxygen.So the oxygen and water quality also have close relations, the same size of the aquarium, the better water quality is more easily dissolved oxygen more,making high oxygen content. When using the product recommend you put the pump in a higher position from the surface of the water, to prevent the battery no electricity, the water will backflow from the trachea, that burn out the air pump.
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