NuvoH2O Home Water Softener Cartridge is designed to help you save thousands of dollars while providing healthier, clean water for your home. This cartridge fits your existing water softener system and lasts up to six months, effectively cleaning approximately 20,000 gallons of water. Unlike traditional salt-based softeners, this system uses a salt-, citrus-based softening formula that softens water without removing essential minerals your body needs. It also reduces the pH level of your water, bringing it closer to neutral, and prevents scale buildup, protecting your pipes and water-using appliances from damage. Model Number: HHP-2516