My water softener stopped working after 20 years. I checked with the water department and the total hardness of my water is 7gpg. I certainly notice a difference with the feel of my water without the softener but don't know if I should be looking at another softener with the 7gpg. If was suggested that I look at the Housetron by fluid dynamics as an alternative so my husband does not have to lug bags of salt up and down the steps. I was wondering if anyone has seen this unit in action. Thanks.