• Compatibility: Replacement filters and sponges are compatible with 152oz/4.5L wireless stainless steel cat water fountain
• 5-Layer Filtration Filter: Non-woven fabric could filter hair and impurities; Activated carbon can remove odor and bad taste; Ion exchange resin can soften tap water; Filtration stone can removes heavy metals and release trace elements
• High-Density Sponge: High-density pump sponge can remove fine particles, preventing them from entering into pump, it can help extend pump life
• Replacement Frequency: We advise you to replace filter and sponge every 1-2 weeks; If you have multiple pets, please clean fountain and change filter more often
• Warm Tips: Before replacing the filter, please rinse filter for 5 minutes in clean water, and then rinse filter for 30 seconds