Does Water Pal reduce mineral build-up in plumbing?

Water Pal begins to soften and remove existing mineral build-up as soon as it is installed.  We recommend that hot water tanks be drained after 30 days as a result of the removal of scale from the inside of the tank.  Filters or screens in the system may require cleaning as well.  This initial cleansing effect is temporary due to the fact that the plumbing continues to stay clean.
This is the inside of a water pipe.  A unit using Water Pal technology had been wrapped around a 2-inch copper pipe. The shiny silver ball is a ball valve. You can see white scale, which is calcium build-up, in the pipe from incoming city water prior to the installation of the unit.  The pipe clean area you see is clean downstream of the unit as far as could been seen.