Just need two valves and a long hose, you can quickly change the water in the fish tank and use the pressure of tap water to drain water. This semi-automatic water changer is suitable for medium and large fish tanks. The installation is convenient, the operation is simple, a bucket is not needed, the dirty water in the fish tank is pumped out under the pressure of tap water, and after the drainage is finished, just open and close the valve and add water. The 83.5cm long cleaning tube has a built-in filter. When draining water, gently stir the gravel to remove debris. It 't make noise and the fish 't be . Suitable for most faucets Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the , the Philippines, and so on. voltage: AC110V Material: plastic colour: black Package Contents: 1 x Netbag interface 1 x connection head 1 x Sand filter mesh 3 x telescopic catheter 1 x All -type motor 1 x Sandwashing cup 1 x filter bag 1 x rainbow tube Only the above package content, other