ITidyHome Pet Water Fountain Replacement Filter 16 Pack Premium Cotton Activated Carbon Replacement Water Fountain Filter for Pet Fountain Pet Water Fountain Filter Keep Water Fresh

Notes: Please rinse filter with water thoroughly before use. Replace it every 2-4 weeks to maintain water freshness. Replace more frequently with multiple pets using the fountain. A small amount of carbon dust may be released for the life of filter which is not harmful to your pet. FEATURES : Size: 5.0*0.4 inch. Package Includes: 16 Water Pet Fountain Replacement Filters. Pls kindly note: If the resin turns red, it is because the water contains a lot of iron ions. The iron ions purified by the resin will change the color. Don’t worry, these will not harm your pets.