- Compatibility: Designed specifically for the PETLIBRO 71oz/2.1L Water Fountain model PLWF002. Please verify compatibility before purchasing. - Enhanced Filtration: Our replacement filters offer quadruple filtration, ensuring your cat enjoys pure and fresh water. The filtration system includes: - Double-layer polycotton that effectively captures hair, sediment, and debris. - Activated carbon that eliminates impurities and odors. - Natural resin that removes residual chlorine and softens tap water. - Mafic stone that adsorbs surface bacteria, promoting healthy water quality. - Quality Materials: Each component is securely sealed with high-quality PP cotton, preventing any penetration of particles into the water. The larger particles of coconut shell activated carbon and ion exchange resin provide superior purification and durability compared to older models. - Health Protection: This filter is essential for removing impurities from your pet's drinking water. It filters out dust, odors, and heavy metal ions, ensuring your pet has access to fresh and healthy water. - Usage Instructions: Soak the filter in clean water for five minutes before use to optimize filtration performance and remove any production dust. For best results, replace the filter every 1-2 weeks in summer and every 2-4 weeks in winter. - Replacement Indicator: If the cat fountain’s indicator light turns yellow, it is time to replace the filter. - Practical Applications: - Ideal for busy pet owners who want to ensure their cats have clean water at all times. - Perfect for households with multiple pets, providing a consistent supply of filtered water. - Great for use in homes with hard tap water, effectively softening and purifying the water for your furry friends.