[High performance] The maximum flow rate of the powerful 220V / 28W water pump motor is 1800l / h. It takes 0.45 hours to extract the 180 gallon water tank. Different lengths freely adjustable: 4715cm (18.5inch-45inch). [Durable Safety] Keep the aquarium safe, change water quickly, clean fish food, dirt and droppings are ideal for regular water changes - no need to soothe water droplets and solid valves can increase suction. Keep the aquarium clean. Use accessories to filter gravel and absorb food, fish droppings and toxins accumulated in the water tank. [Quiet Design] This gravel cleaner uses ceramic frequency conversion movement, which can reduce the wear of the pump, keep it quiet during operation, and extend the 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 type of aquarium gravel cleaning machine, please feel free to contact us, we care about our customers very much, we will definitely provide you with all services Underwater suction pump module Adjustable flow / oxygenation / filtration / nozzle 4 interchangeable heads Washable: integrated filter to prevent pumping. -cleaning brush: effectively clean the mud on the surface of the aquarium. -Rotatable duckbill head: 360 rotatable design, can easily clean fish manure and garbage in the corners of the aquarium. Sand washing machine: suitable for cleaning large aquariums. Voltage: 220VAC Fall: 2.0m Power: 28 W Maximum throughput: 1800l/hWarning 1. Do not use water over 35C above 0C, otherwise the pump will be damaged. 2. The equipment can only start after putting the empty pump into the aquarium water