Scam
I looked at the product and immediately thought scam...ten I saw that there were over 200 reviews and most were positive and then I thought "Could it really work?"
I read the reviews. All of the positive ones were very well written, they were very specific (ex purchased on February 12, 2017 or my gpg is 197) and most contained photos...hmmm.
The reviews on Amazon are VERY different from the HD reviews https://www.amazon.com/ScaleBlaster-SB-175-Water-Conditioning-System/dp/B0089FLDWM
Scam 100%