Hydro-Logic PreEvolution Catalytic Carbon/KDFfilter

Ensure your Evolution RO1000 runs more efficiently. Helps protect the RO membranes and extends their life. Less filter changes and maintenance - every 7,500 gallons of purified water. Cleanable sediment filter is re-usable. Combination of KDF85 and the KDF55 with eco-friendly catalytic carbon filter reduces chlorine, chloramines, iron, sulfur, and heavy metals. - great for city or well water. Highly recommended when using more than 150 gallons of purified water per week on average.  1/2" inlet tubing to Evolution 2 extra stages of filtration prior to the Evolution-RO Extends Evolution-RO Prefilter life (without PreEvolution: 2,000 gallons, with PreEvolution: 7,500 gallons) Ensures your Evolution-RO runs more efficiently