Stock Up and Save on Fountain Maintenance For multi-pet households or anyone who prefers buying in bulk, this value pack ensures you always have replacement filters on hand. Running out of filters means your fountain isn't performing at its best, and your pet may not drink enough water. Triple-Action Filtration Each filter uses a three-stage filtration process to help keep water tasting clean. Non-woven fabric catches hair and food particles before they reach the carbon layer. Activated carbon helps reduce chlorine and odors from tap water. Ion exchange resin helps reduce mineral content and limescale buildup. Exact Fit for 71oz/2.1L Capsule Fountains These replacement filters are engineered to match the exact dimensions of 71oz/2.1L capsule-style pet fountains. The secure fit prevents water bypass, ensuring every drop passes through the filtration layers as intended. Pump-Saving Pre-Filter Sponges Every filter comes with a matching pre-filter sponge that protects your fountain pump from hair and debris buildup. Clean sponges weekly and replace them with each filter change to maintain optimal water flow and quiet operation. Simple Replacement Process Before first use, soak the filter in cool water for 2 minutes and rinse thoroughly. Drop it into the filter tray — no tools required. Replace filters every 2-4 weeks for single-pet homes, or every 1-2 weeks for multi-pet households. What's in the Box 16 replacement filters + 16 pre-filter sponges — providing approximately 8+ months of supply for single-pet households, or 4+ months for multi-pet homes.