ZHIYANG Aquarium Vacuum Gravel Cleaner & Water Changer Effectively separates and removes debris from your aquarium Compared with the price, it easy to operate and durable, can be used in small or larger aquarium tank, and also suitable for salt water tank Insulated net design to prevent small fish and small gravel be siphoned from tank The soft pipe length approx 57 inch and the bulb The inner pipe diameter approx 0.5 inch