Unlike other pond vacuums on the market, the pondovac 3 will continuously operate because of its patented dual chamber design, which cuts your vacuuming time in half. The debris collection bag attaches to the discharge hose of the vacuum to capture the debris, which can then be used as a natural fertilizer. For pool applications, use the bag to recycle the vacuumed water. Sturdy, built-in wheels & an adjustable handle allow for easy movement & transportation. The pondovac 3 includes four nozzles to cover all applications. Also included is a clear Extension tube (1.6′. long), which allows easy visual inspection to Monitor operation.