[High performance] The maximum flow rate of the powerful / 28W water pump motor is 1800l / h. It takes 0.45 hour to extract the 180 gallon water tank. Various freely adjustable lengths: 47-115cm (18.5inch-45inch). [Long-lasting safety] Keep the aquarium safe, change the water quickly, clean the fish feed, 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 attachments to filter the gravel and absorb food, fish droppings and toxins accumulated in the water tank. [Quiet Design] This gravel cleaner uses ceramic frequency converting motion, which can reduce the wear and tear of the pump, keep it quiet during operation, and extend its service life. [Satisfaction Guarantee] Aquarium Gravel Cleaner is designed to provide a healthy environment for our underwater friends. If you are not satisfied with this kind of aquarium gravel cleaning machine, please feel free to contact us, we care about our customers very much, we will definitely provide all services to you Underwater suction pump module Adjustable flow / oxygenation / filtration / nozzle 4 interchangeable heads -Washable: integrated filter to prevent pumping. -cleaning brush: effectively clean the mud from the surface of the aquarium. -Rotatable duckbill head: 360 rotating design, can easily clean the fish manure and waste in the corners of the aquarium. -Sand washing machine: suitable for cleaning large aquariums. Voltage: AC Autumn: 2,0 m Power: 28 W Maximum flow: 1800l / h Warning 1. Do not use water over 35 C above 0 C, otherwise the pump will be damaged. 2. The equipment can only be started after putting the empty pump in the aquarium water