Works Ultra-Quiet: Ultra-quiet water pump never disturbs you or your pet, and the pump should be cleaned at least every two weeks to prevent clogging (Replacement Pump: B07WKLJ8PX) 2.4L Large Capacity and Visible Water Level: Large water reserve is suitable for small and medium-sized animals. Water level indicator window makes it easy to monitor water volume at any time, your lovely pets will never go thirsty again from lack of water in your absence Blue Indicator LED: The LED indicator also encourages animals to drink at night. You no longer have to worry about your pet having thirsty nights Circulating Filtration System: Replaceable carbon filters can purify water, remove dirt. It provides fresh and clean water for your lovely pets. The cat fountain is compatible with triple action filters 3 Different Water Flows: Smooth flow, bubbling water and quiet flow, meet different needs. Free-falling stream and bright color encourage animals to drink more water