Sediment and Carbon Replacement cartridges for the NuvoH20 Manor Trio System. 1. The sediment filter is a first line of defense in the Manor Trio System and will catch and effectively remove large particles such as sand, rust, gravel, debris, and other suspended particles. 2. The iron filter + heavy metals filter improves the quality of your water, helping you avoid stains on your sinks, tub, toilets, and other water-based appliances. The iron + heavy metals filter mitigates iron and hydrogen sulfide in your water. It also reduces water-soluble lead, mercury, nickel, and chromium! The Manor Trio Water Softener + Filtration System is NuvoH2O's unique citrus-based whole-home system that softens your water and offers a choice of two additional filters. The carbon, iron + heavy metals, sediment, and chloramine filters each have their own set of sophisticated features, are the true heroes in this latest innovation from NuvoH2O. It helps you save thousands of dollars by extending the life of water-based appliances and water systems. It also prevents scale buildup and dissolves existing scale, all while being eco-friendly, compact, and backed by a satisfaction guarantee. The Manor Trio Water Softener System is salt-free, designed with advanced technology, and offers great benefits: First, the system softens your water without removing the healthy ‘hard’ minerals in your water. Unlike old-fashioned softener systems, our system does not remove and replace hard water minerals, such as Calcium and Magnesium, with Sodium or Potassium. We use a citrus-based softening formula, called CitraCharge, which bonds to these minerals making them incapable of sticking to pipes and surfaces. Second, the System reduces the pH level in your home’s water, bringing it closer to 7.0 or neutral. This helps to stop scale so it can’t accumulate on surfaces, or in pipes. Third, the System works to remove scale buildup that already exists due to a previous faulty water softener.