Aqueon Aquarium Water Changer 50 FeetSimply attach the water flow assembly to the faucet using the included multi connection faucet adaptor and turn on the faucet. Features: Makes routine water changes much easier! Attaches to faucet: removes dirty water and can return clean water Also vacuums out the debris in gravel Eliminates spills and heavy lifting Auto siphons, includes built in on off valve