[High Performance] The maximum flow rate of the powerful 220V / 28W water pump engine is 1800L / h. It takes 0.45 hours to extract the 180 gallon water tank. Different freely adjustable lengths: 47-115 cm (18.5 inches-45 inches). [SUSTAINABLE SAFETY] Keep the aquarium safely, change the water, clean fish, dirt and excrement are ideal for regular water changes - no need to soothe the droplets of Water and solid valves can increase aspiration.Keep the aquarium clean. Use accessories to filter the gravel and absorb food, fish excrement and toxins accumulated in the water tank.[Silent Design] This gravel cleaner uses a ceramic frequency conversion movement, which can reduce the wear of the pump, keep it silent during operation and prolong its life.[Satisfaction Guarantee] Aquarium Gravel Cleaner is designed to provide a healthy environment to our submarine friends. If you are not satisfied with this type of aquarium gravel cleaning machine, do not hesitate to contact us, we care a lot about our customers, we will certainly provide you with all servicesUnderwater suction pump moduleadjustable flow / oxygenation / filtration / nozzle4 interchangeable heads-lavable: integrated filter for Avoid pumping.-Cleanse: Clean the mud effectively on the surface of the aquarium.rotary duck spout: 360 rotary design, can easily clean fish manure and waste in the corners of the aquarium.-Machine Sand: Suitable for cleaning large aquariums.Voltage: 220Vacautumn: 2.0 mpower: 28 Wmaximum flow: 1800L / HAttention1. Do not use water at more than 35 C above 0 C, otherwise the pump will be damaged.2. The equipment can only start after putting the empty pump in the water of the aquarium