This great value aqua stream pet fountain from petsafes aqua fountain range has a little waterfall that oxygenates your pets drinking water the water is constantly circulating which inhibits the spread of bacteria and encourages your pet to drink more water a quiet water pump circulates the water through a foam filter which helps to keep hair and other detritus from clogging the pump the filter recess contains an active carbon filter that keeps the drinking water free from odours and tast