IDS New Aquarium Gravel Cleaner Siphon Vacuum Fish Tank Gravel Sand Cleaner Total Size(L*Max.W) : 66.9" x 2.2" (170 x 5.5cm) Vacuum Cup Size(L*D): 3.5" x 1.8" (9 x 4.5cm) Easy to use. Just press on the pump and water will flow from the tank into a bucket Perfect for quick water changes, efficiently separates debris from grave A must for any type of fish keeping