Hach Total Hardness Test Kit, Model 5-EP, Hardness Testing, Water Quality Test Kit, Accurate Hardness Measurement, Easy-to-Use Hardness Test Kit, 145400

You can't really "feel" hard water. Get this test kit and see what your hardness is throughout its cycle. https://www.amazon.com/dp/B00N3YPOUG

The only way to know if it is doing what it is supposed to do is with a hardness test kit:https://www.amazon.com/Hach-145400-Total-Hardness-Model/dp/B00N3YPOUG