Hi everyone, I'm a relatively new pool owner (fourth season) and my husband has always been the pool guy. He's very experienced and worked for a pool company for years, but we recently came upon a perplexing problem. No matter what volume of chemical we add in our pool (all chemicals, not just chlorine), the test strips come up zeros/minimum in every level. We've bought new test strips over and over but always get the same result. My husband and his uncle (owner of a pool company) say that sometimes this happens and the water just doesn't take the chemical.....but how is that even possible? Where does it go? I've tried to find answers, but all anyone talks about is not holding chlorine- and this is way worse that that! We'd like to avoid replacing all of our water, so We'll take any help we can get! Thanks for reading!!