Since I installed the WK1 on 6/25/2009, I used the WK1 for build up on the aerators on the faucets, shower heads and glass shower walls which were terrible! After the WK1 was in use for 7 months the build up has almost totally disappeared without any physical cleaning.
I also have a tankless water heater that needs to be de-scaled once a year, to keep the performance ` the way it should be. After the first year with no WK1 installed, the first cleaning with a de-scaling product, the solution begins somewhat clear and light blue in color at the beginning, and after the 45 min flushing time the solution came out a rusty dark color with lots of scale. After the second cleaning with the WK1 installed for 8 months, the same solution used for 45min flushing time came out virtually the same as when it started, clean and clear.
I have recommended your product to friends and associates.
