Hi, I just had a vinyl above ground pool installed in April 2015. I stumbled onto the BBB method on google. I was intrigued by being able to maintain my pool with things I could buy at any store. I started out by buying the taylor k-2006 test kit on amazon. Immediately reading the booklet I got a terrible headache from all the terminology and calculations and wanted to give up. However, I forged ahead and am starting to have some understanding. My pool water is and has been crystal clear. The only problem I am having is extreme eye irritation. I have been using trichlor tabs and shock. I was shocked to find that my pools cya level is at least 100! I checked my water yesterday and my fc=13.6, cc=0, ph=7.2, ta= 60. thanks in advance for any help or advice.