The APWCUN-101 is a 1 cu. Ft. acid neutralizer. The flow rate is 5 gallons per minute with standard connections of 1 inch each. The system is used for pH adjustment of acidic water. The system prevents blue-green stains from fixtures. The system aids in protecting copper plumbing systems. The new tank design is equipped with threaded valve to tank connections. The transparent tank helps to create a convenient method to view the media bed level. The system does not require a control valve, electricity, or a drain line. A fill-port is included for easy media fills and additions. It has a unique up-flow system design that helps to reduce backwashing.