【High Performance】Powerful 220V/28W water pump motor with maximum flow rate of 1800l/h. It takes 0.45 hours to extract a 180-gallon tank. Various freely adjustable lengths: 47-115 cm (18.5"-45"). 【LONG-LASTING SAFE】Keep your aquarium safe with quick water changes and clean fish feed, dirt and feces, ideal for regular water changes - no need for soothing dripping, solid valve increases suction. Keep the aquarium clean. Use the attachment to filter gravel and absorb food, fish waste and toxins that accumulate in the tank. 【Quiet Design】This gravel cleaning machine uses ceramic frequency conversion movement, which can reduce the wear of the pump, keep it quiet during operation, and extend its service life. [Satisfaction Guaranteed] Aquarium Gravel Cleaner is designed to provide a healthy environment for our underwater friends. If you are not satisfied with this aquarium gravel cleaning machine, please feel free to contact us, we care about our customers very much and we will definitely provide you with all services Underwater Suction Pump Module Adjustable flow/oxygenation /Filter/ Nozzles 4 interchangeable heads - Washable: Integrated filter prevents pumping. -Cleaning Brush: Effectively cleans the soil on the surface of the aquarium. - Rotatable duckbill head: 360-degree rotating design, you can easily clean fish feces and waste in the corners of the aquarium. -Sand washing machine: suitable for cleaning large aquariums. Voltage: 220VAC Autumn: 2,0 m Power: 28 W Maximum flow: 1800l/h Warning 1. Do not use above 0℃ or above 35℃ water, otherwise the pump will be damaged. 2. Put the empty pump into the aquarium water before starting the equipment.