The 1.5-Gallon Petmate Ultra Bubbler

is an automatic pet water freshener that uses an air pump to oxygenate the water, thus inhibiting the growth of bacteria and leaving only fresh-tasting water. Its large-capacity reservoir supplies your pets with 1.5 gallons of fresh water, enough for an extended period of time. Best of all, this automatic pet drinking fountain has an adjustable air flow valve that lets you control the size of the bubbles that intrigue your pets and provide a soothing atmosphere in the surrounding area. You'll appreciate the large opening that makes the 1.5-Gallon Ultra Bubbler easy to fill. This dishwasher-safe pet fountain is also easy to clean. Additional features include a translucent reservoir for a quick view of the water level.