High performance:The maximum flow rate of the powerful 220V / 28W water pump motor is 1800l/h. It’s necessary0.45hour to extract the 180 gallon water tank.Different lengths freely adjustable:47-115cm (18.5inch-45inch). Long-lasting safety: keep the aquarium safe, change the water quickly, clean fish food, dirt and excrement are ideal for regular water changes - no need to Soothe water droplets and solid valves can increase the suction.Keep the aquarium clean.Use accessories to filter gravel and absorb food, fish droppings and toxins accumulated in the water tank. Quiet designThis gravel cleaner uses ceramic frequency conversion movement, which can reduce the wear and tear of the pump, keep it quiet during operation and prolong its service life.