The hy drate is a healthy way to turn your pet's ordinary water bowl into an automatic water fountain: Designed to fit in your pet's favorite bowl, it remains securely in place with small, powerful suction cups. Fresh water continuously circulates through the hy drate, stimulating your pet's natural instinct to drink more. Small sediments, like fur and food particles, are trapped in the filter's mesh. Activated carbon filters the water to remove chlorine and odors for a cleaner, better taste. Energy efficient, the hy drate is powered by a quiet, submersible pump with an adjustable flow control. The outer shells are detachable, making it dishwasher safe. One activated charcoal filter is included. Three-pack replacement filters are available separately (PFD17-12905). It is recommended you replace the filter every two to four weeks. How it works: Fresh water continuously circulates through the hy drate, while small sediments, like fur and food particles, stay trapped in the filter's mesh. Activated carbon filters water for cleaner, better-tasting water. Features: Fresh, filtered water in any pet water bowl. Activated carbon filter removes chlorine, odor and small particles. Quiet, submersible pump for continuous use. Powerful mini suction cups keep it in place. Meets UL73/CSA - C22.2 No. 68-92 safety standards. Includes UL listed low-voltage, Class 2 power supply. Includes: Upper and lower shell in three color choice options. High-quality submersible pump with low voltage power cord. Cord suction cup to neatly attach to bowl. 1 Activated carbon filter. AC power adapter, low-voltage.