Specifications: This clever British invention attaches to your garden hose and the watering pressure creates a venturi effect, which sucks up any dirt and debris. This collects in a re-useable muslin bag, allowing the clean water to pass through. The pond debris makes useful garden fertiliser. The special brush attachment has special rollers which glide easily over the pond bottom, gently removing the dirt whilst protecting pond life and fish. The Tornado Pondvac comes complete with a lightweight telescopic aluminium handle to easily reach into the largest ponds.