The Ultra GravelVac is a hand-operated siphon cleaner built from aquarium-safe plastic that separates waste from gravel and draws it out of the tank during water changes. Submerging the cylinder and moving it up and down a few times starts the self-start siphon, so no pump or priming is needed to get water flowing. A wide-mouth nozzle attaches to the cylinder to broaden surface coverage, helping clean more substrate area while using less water per change. The set also includes an Ultra Hose Clip that fastens the hose to a bucket or the aquarium rim so it stays in place while draining. Components are designed to withstand repeated submerged use in freshwater setups. The cylinder is available in several lengths to match different tank depths and gravel bed thicknesses.