Feactrue - Sand washing head: Built-in filter to block the gravel from being sucked out. - Cleaning brush: Effectively cleans the mud on the aquarium wall . - Rotatable duckbill head: 360swivel design for easy cleaning of fish manure and trash at the comers of the aquarum. - Sand washer: Suitable for cleaning vanous bottoms of fish tanks ,with a wide range of cleaning. Upgraded 6 In 1 MultifunctionEasily filter impurities and remove bottom trash. The upgraded aquarium gravel vacuum cleaner have 6 in 1 functions with water changer + sand washer + debris cleaning + water filter + water shower + water flow. Suit for freshwater and seawater and various depth fish tank. Should connect with different connector when working for different function. It's your aquarium good helper. Strong PowerThe 220V/28W powerful water pump motor can provide the maximum flow of 1800L/H. It only takes 0.45 hour to pump out a 180-gallon tank. At the same time, the pump flow is adjustable. Freely adjust the different lengths:18.5"-45.27"(47-115cm)suitable for both shallow and deep aquarium.