My water test strip only tests for Chlorine, PH, and Alk. I took a sample of my water to the pool store and my total hardiness was way low along with my chlorine ? (What a rip off this was by the way) The computer printout stated to add 11 pounds of this and 10 pounds of that etc.... I just used a little of what was needed and I am in range according to my test stripes. I did not add no way near what was recommended. Water is very clear. Should I be concerned with the total hardiness ??? Thx.