So, I drained and refilled my pool 5 times to lower my Cya from what had to be over 320ppm having never got a reasonably correct k-2006 test result. I finally received my 4088 tester and having had a cya test done by leslies that showed my cya to be 25, a result that my calculations suggested was to low. However, when I did my own test using my new 4088 tester, I found the result to be 30--which too was low, but I confirmed it to be accurate using my k-2006 vial . Unfortunately, I overshot my goal of 50 on my last of 4-5 drains and refills. And ended up at 30. My question for the pros here is, I'm going on vacation for a week, and don't have anyone to check and replace bleach while I'm gone. Would it be worth my while to use up some of my trichlor tabs and raise my Cya at the same time? I've been using 1- 121 oz of 8.25 daily. How many tabs should I use to not go over 50ppm and keep my FC between 3 and 8 as suggested.