Maintain optimum water quality by removing unwanted waste with Aquatops easy to use gravel vacuum. This essential tool includes an instant siphon pump to quickly and easily siphon water and detritus from your aquarium to your bucket or drain. The innovative gravel head comes with a unique intake chamber to effortlessly sift your substrate to remove detritus, and also includes a gravel/fish guard to prevent the accidental siphoning of gravel or aquatic creatures from your tank. The AGV Series of gravel vacuums comes with a 7 ft hose giving you plenty of slack for taller tanks. Also included is an On/Off flow control valve allowing complete control over the water flow into your collection bucket, or add a hose extension onto the barbed fitting of the flow control valve to direct your waste water to an appropriate drain.