tagnant water can get contaminated over time. Keep your pets healthy with filtered, moving water from the Seashell Pet Drinking Fountain. Four layers of filtration provide your pet with an excellent source of clean water, which reduces the risk of urinary and kidney issues. The quiet operation is complimented with a soothing LED light. The Elspet Seashell Fountain Water Dish even features a knob to adjust the speed of the water flow. The fountain is easy to clean and uses a filter that only needs changed every three months.