Hi guys, I purchased a 7000sxt valve, 1.5 cu ft water softner about 2 months ago. My water is 25 hardness with no iron. After installing the softener it and running a regen cycle the water was noticeably softer, but not completely soft. I started out with 9lbs of salt per regen and have slowly increased it to 22lbs. The water is still not completely soft. It doesn't get any better or worse through the week as the softened water is used up. It seems like there is hard water that is bypassing the softener. Is that possible? Thanks in advance for any help ya'll can give me.