Cleaning your gravel is a vital part of weekly maintenance and so this tool is an essential buy for every aquarium owner. It works by removing debris from inside the gravel without actually removing the gravel from the tank.Simply move the gravel cleaner up and down to start the syphon (vacuum) and then dig it into the gravel. This stirs the gravel remove any debris whilst keeping the aquarium water nice and clean. Continue to move the gravel vacuum around the bottom of the aquarium until you are happy the gravel is clean. The non-kink ribbed hose ensures the syphon will not stop and you have maximum flow for ease of cleaning. You even get a clip to secure the hose into a bucket and prevent the floor becoming wet.