Renewed Purity: Exclusively designed for the PROQ2 Alkaline Reverse Osmosis system, our filter replacement set ensures optimal performance by efficiently removing chlorine, fluoride, heavy metals, and more. Fast and Effortless Replacement: Experience hassle-free maintenance with our quick-change filters. No tools required—just a simple twist and lock process that ensures your alkaline water system remains efficient. Filter Change Once a Year: Our replacement filter set includes a sediment filter, GAC filter, carbon block filter, 50 GPD Reverse Osmosis membrane, alkaline remineralization & post-activated carbon compound filter. Revitalize with Alkalinity: Our 5-stage alkaline water filters replenish essential minerals for optimal hydration and pH balance. Enjoy the benefits of pH+ alkaline water—hydration with essential minerals —thanks to the included alkaline remineralization filter. NSF Certified Quality: Put your trust in our replacement filters that meet NSF international standards for safety and water quality. Have peace of mind as you protect your family with every refreshing sip.