Aqueon Aquarium Water Changer 

Simply 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