The APWCUN-100LM is a 1 cu. Ft. acid neutralizer—one of the few, very trusted options in the niche of water system solutions meant for correcting the pH level of water. The flow rate is an impressive 5 gallons per minute! The system is used for pH adjustment of acidic water. The system prevents formation of blue-green stains that is often found on plumbing fixtures and installations near points of water supply. The system is the best recommendation for protecting copper-based plumbing systems. The new tank design is equipped with a threaded valve to tank connections. The transparent tank helps to provide 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 a part of the package to ensure easier media fills and additions. The APWCUN-100LM uses a unique up-flow system aimed at reducing the backwashing.