Martin, let me first say what a wonderfully helpful calculator this is. Unfortunately, I cannot seem to get past the Ion balance test. Per your instructions, I tried adjusting the Ca level to closer match my water report in hopes it gets the ion levels within tolerance. Currently, I am showing 5.65 Cations and 50 Anions, a ratio of .11.
I used the "reported total alkalinity" calculator to determine the bicarb. and est. CO3 concentration. Calculator said 125.7 HCO3 and .2 CO3.
Can someone tell me what I'm doing wrong? Below is what my water report says (Salt Lake City, UT):
Alkalinity as CaCO3: 103.4
Hardness as CoCO3: 142.4
Is it possible that the following minerals are causing the ion count to be off? These are on my report, but not in the calculator:
Antimony, Arsenic, Barium, Nickel,and Selenium
I really would appreciate any help!