http://www.hydrocareus.com/jump/?source=hydrocareusHydroCare is a revolutionary breakthrough in the treatment of hard water. One patented unit transmits a unique radio frequency signal that effectively breaks up existing limescale that clogs in pipes, showers and appliances. It will prevent any future buildup protecting the entire plumbing system and increasing efficiency. The electric field is generated through the entire plumbing system and all water appliances.