In- Features: Easy Installation: Fish tank filter adopts a suspension design, which makes reasonable use of the space of the fish tank, and is suitable for small fish and aquatic plants Multi-Stage Filtration: Waterfall style circulation system is quiet and stable, purifying water quality, increasing o supply, and taking care of your fish health Important details: Before power up, must ensure that there is water in the filter, when the filter is short of water, the impeller of the idling pump will damage the pump and make noise Adjust the water output: water flow control valve, can be adjusted according to the size of the weekly water-saving flow Note: You can use the buttons at the bottom of the filter to adjust or fix the position of the device so that it does not shake. The higher the water level in the water tank, the better the mute effect. Description: Name: O pump Color: Transparent Material: Plastic Dimensions: 19.5 x 4.5 x 2.5cm Filter box: 1 Power: 2.5W Flow rate: 250L/H Clamp thickness 3-5mm Application scenario: Fish tank, aquarium Packing list: O pump x 1 Note: 1.Due to screen and other objective reasons, there may be a certain color difference, please understand. 2.Due to manual measurement, please allow 1-3 cm error, thank you.