Multifunction Cleaner -- The aquarium cleaner with water changer + sand cleaner + fish debris cleaner + water filter + water shower + water flow 6 in 1 functions. Should be connected to another plug when working for another function. It is your good helper of the aquarium. Easy to use: After installation as shown in the picture, turn on the gravel vacuum pump only after submersion in aquarium water. If you turn it on without water, it absorbs air and no longer works. Silent design--The frequency conversion core of this gravel cleaner is made of ceramic which reduces the wear of the pump, keeps it quiet during work and prolongs its life. It is ideal for tank water change, dirt cleaning and water flow. Suitable for large and small tanks, turtle tanks, fresh and salt water. SAFE & DURABLE: This siphon cleaner has a high power of 28W and low energy consumption voltage of DC 12V Guaranteed safe in the aquarium and quick for water changes, cleaning fish food, dirt and droppings.