About This Compatible Dog Fountain - The replacement filters are ONLY compatible with PETLIBRO Capsule Dog Water Fountain PLWF008. In the Box - Package includes 8 packs of replacement filters and 8 packs of replacement pre-filter sponge. 5-layer Filtration System - 1. Activated carbon eliminates foul odors 2. Ion exchange resin removes heavy metal ions and softens water quality 3. The non-woven fabric captures dogs' hair and impurities 4. Silver ion ceramic balls remove harmful particles 5. The built-in pump sponge further filters debris to prevent blockages and damage. For Optimal Use - Soak the filter for 5 minutes and rinse for 30 seconds before use. We recommended replacing the filters every 2 weeks. If you have multiple pets, please clean the fountain and change the filter more often. All For Your Pet’s Health - Every drop of water is filtered through 5-layer filtration to remove all impurities and provide oxygen-enriched and better-tasting water. Overview Color : White Material : Acrylonitrile Butadiene Styrene (ABS) Brand : PETLIBRO Item Weight : 0.26 Pounds Capacity : 8 Liters