Electric Aquarium Vacuum Gravel Cleaner: 36W Fish Tank Cleaner Vacuum with Strong Suction for Water Change Wash Sand Algae Cleaner Water Shower and Water Circulation, Timed Off36W Adjustable Power & Timed OFFThis electric fish tank vacuum gravel cleaner is equipped with an adjustable pump motor, silent work. You can adjust the power to L (36W), M (27W) or S (19W) to match the size of the fish tank, higher power, stronger suction. It helps you quickly change water, which is more efficient and safer! You can also set the timer button to switch off automatically after 10, 30 or 60 minutes. 3 stage Comprehensive FiltrationNewly