Description: Maintenance is a necessary part of a good aquarium keeping. This multi-functional aquarium cleaning tool makes cleaning an aquarium as easy as pressing a button. It can separate and remove dirt from your aquarium. Press the on/off button on the top, the water in aquarium will be pumped out automatically through a hose for changing water. Easy to use. Features: With this tool, you can remove the dirt from the bottom of your aquarium easily. Supplied with one suction pipe, it is suitable for both large and small aquariums. Also be used for water changes, or to empty your aquarium when you connect a hose to outlet. Adjustable height by two interchangeable pipes of different length 57cm-80cm. Battery powered --safe for you and your fish, energy and labor saving. Press the on/off button on the top, the water in aquarium will be pumped out automatically through a hose for changing water. Easy to use. Specification: Condition: 100% Brand New Material: Acrylic Battery: 2 * No.2 Battery ( Not Included ) Normal Water Level: 40cm / 15.7" Maximum Water Level: 52cm / 20.5" Product Length: Approx. 57cm / 22.4" Maximum Length: Approx. 80cm / 31.5" Package Weight: Approx. 286g Package Included: 1 * Aquarium Filter Pump Notice: When install the water pump, you must ensure the first part of the head and the water outlet submerged in water, and then start the switch. When water can come out from the outlet, you can lift up the sand washing device to make the head and outlet out of the water.