Features: 1.Circulation filtration to purify water quality, built-in double-layer filtration, water purification. 2.Electric water changer, easily change and fill water for fish tank. 3.Quickly cleaning droppings, cleaning up the fish residue on the bottom of the tank. 4.Waterflow knob adjustable freely, through the knob to adjust the waterflow and suction. 5.Sand washing design, absorb dirt, easier to cleaning sand. Specification: Item type: Aquarium Water Changer Material: ABS Color: As picture shown Weight: Approx. 859g Waterflow rate: 800L/h Head: 1.6m Power line length: Approx. 2.5m/8.2ft(with switch) Product installation: 1. Sand washer installation: take out the extension tube and screw it into the thread of the outlet of the lower pump, and the other end into the water inlet of the three links. 2. Install sand washing heads or feces suction device: choose sand washing cover to insert into the water inlet of the pump. If the sand is too high, it will be caught in the impeller chamber during sand washing. Please choose another extension cover to insert into the sand washing cover. When sucking fish manure, you can choose to insert the manure suction device. PackageList: 1 x Host1 x Handle3 x Connection water pipe1 x Filter1 x Sand washing cover + lengthen cover1 x Downspouts1 x Duckbilled water inlet assembly1 x Water outlet1 x Impeller cover1 x Gland nut1 x Rubber ring2 x Other accessory Note： The system will automatically match the corresponding plug according to the receiving country of the guest.