12-Pack Filters, Compatible with PETKIT Water Fountain for Pets, Automatic Water Dispenser for Cats 【SOLO 2】, 【SOLO SE】, 【3.0 PRO】, Cat Water Filter, Softening, Multi-Layer Filtration (Includes Cleaning Brush and Pump Filter) 【Wide Compatibility】: Cat Water Filter, Softening, Multi-Layer Filtration, Compatible with PETKIT Water Fountain for Pets, Automatic Water Dispenser for Cats 【SOLO 2】, 【SOLO SE】, 【EVERSWEET 3.0 PRO】. Before purchasing, please be sure to check the size shown in the image and confirm the model number of your automatic water dispenser. 【Excellent Performance】: High-density porous filters remove dust, pet hair, food debris, and other impurities. Shell activated carbon removes chlorine odor and other odors from the water, improving the taste of the water. Makes cats want to drink more water. Ion exchange resin softens the water quality and effectively prevents the formation of scale. Prevents scale buildup in the water dispenser pump, supports cats' adequate hydration, and protects their health. 【Importance of Replacement】: Clogged filters weaken the water flow and worsen the taste of the water, reducing the amount of water cats drink. Insufficient water intake affects the health of cats. A large amount of organic matter accumulates inside filters that have exceeded their expiration date and cannot be removed. Clogged filters lose their filtration ability, and these impurities accumulate in the water tray and flow into the clean water tank and water tray. If cats drink this, it can cause gastrointestinal disorders such as diarrhea and vomiting. Filters clogged with impurities put excessive strain on the pump, and the pump requires more force, which can cause the water flow to become thin or stop completely, causing cats to lose interest. Pump overheating and wear: Long-term overload operation significantly shortens the pump's lifespan and leads to premature failure. Non-functional filters cannot prevent scale, causing damage to internal components and hindering the normal operation of the equipment. Saturated activated carbon loses its adsorption capacity, making it easier for impurities to mix in, which can cause the water dispenser to emit an unpleasant odor. 【Notes】: This product is compatible with automatic pet water dispensers, but it is not an official product, but you can use it with confidence. Please understand. Usual replacement guideline: Replace every 2-4 weeks. Note: The replacement frequency is affected by the following factors, so please adjust according to the actual situation: Water hardness: The harder the water quality (more scale), the shorter the filter life.