Fountain Cube C for the EVERSWEET ULTRA The Fountain Cube C is a water quality module specifically designed for the PETKIT EVERSWEET ULTRA drinking fountain. It sits at the water outlet of the fountain and must remain permanently installed to maintain consistent water quality. High-density activated carbon for pure taste The core made of high-density, sintered activated carbon forces every drop of water through a solid carbon wall, preventing any bypass or residue. The result is clear, fresh water with a taste that pets naturally prefer. Reduced slime buildup The Fountain Cube C slows slime formation in the water tank by 30 percent. Surfaces stay cleaner longer, significantly reducing the need to clean the drinking fountain. Tool-free replacement in seconds Replacement is tool-free: simply pull out the old cube and insert the new one. No disassembly, no mess, just a quick hand movement. 30 days of consistent performance The Fountain Cube C delivers consistently high filtration performance for up to 30 days. The module’s lifespan can be tracked in real time via the PETKIT app, including automatic replacement reminders. With high-density activated carbon, reduced slime buildup, and tool-free replacement, the Fountain Cube C ensures permanently fresh, neutral-tasting water in the EVERSWEET ULTRA drinking fountain and greatly simplifies monthly maintenance.