Aquarium Gravel Cleaner and Water Changer is a convenient and effective tool for maintaining a clean and healthy aquarium.Safe and Effective Insert the nozzle into the water, bend down so that the drain is below the water surface, and just squeeze the primer ball 25 times, and the water will automatically and continuously flow out. This method is very effective and poses no risk, unlike other products that require strong suction with the mouth for one second to start cleaning dirt.Adjustable Water Flow Our bathtub vacuum comes with an adjustable water outlet valve so you can choose the water flow according to your needs, giving you more control over the cleaning process. You can also directly observe the entire suction process through the transparent hoseVersatility Handheld pool vacuums are suitable for a variety of situations including spas, hot tubs, small above ground pools and more. Please note that it is not suitable for large swimming pools or drainage systems as this takes a long timePackage Contents You will receive 1 pc of bathtub spa vacuum cleaner. It has a simple and design that does not require any electrical support. It is very userfriendly and allows you to clean the bottom of your pool without draining the existing pool water. This not only saves water but also helps you effectively clean your pool.Function EcofriendlyType Pool cleaning toolMaterial plasticColor BluePackage contents1Small suction head1suction head1Connecting rod1Hose 11Water volume control valve1Filter screenOnly the above package contents, other products are not included.Note Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is13 cm.