For giggles, I retested some of the monthly tests now that our deck construction is officially under way. My husband started pouring the footings yesterday (finishing them today). Our TA was at about 90-100 the last time I tested it - about a week or two ago. It's currently in the 300's. Everything else is normal - though I am in the middle of the shocking process. Could the high TA reading be due to the shocking or even the cement mix thats been blowing around? The mixer is downwind of the pool but that doesn't mean it isn't getting in there... Help!