WaterGroup UpFlow NRV Neutralizing Filter

The UpFlow NRV Neutralizing Filter contains special media which raises the
pH of acidic water and neutralizes its acidic characteristics. In addition to
protecting pipes, plumbing fixtures and appliances, this filter also facilitates the
oxidation of iron and manganese by raising the pH to enable an iron filter to be
used. After a period of time, additional media may be required.