The correct way to use it is to put the water pump into the water and start it, otherwise the water pump will not start. 【Multifunctional Cleaner】Aquarium Cleaner, Water Change + Sand Cleaner + Water Filter + Water Shower + Water Flow 5 in 1. When working, it should be connected to a different socket. Aquarium Water Change 【Quiet Design】The frequency conversion core of this stone breaker is made of ceramic, which reduces pump wear, keeps quiet while working and extends the service life. Aqua Window Cleaner The Hmax is 118 inches tall and the maximum flow rate is 2000L/H - it is also equipped with 2 powerful suction cups. It is ideal for changing tank water, cleaning dirt and water flow. Suitable for large and small cars, turtles, fresh and salt water. Cleaning kit 【Safe and durable】This siphon cleaner has a high power of 20W and a voltage of 220V. Keep your aquarium safe, change the water quickly, clean food, dirt and fish droppings.