My CYA levels have been running high from the Dichlor and Trichlor I had been adding to my pool the last 4 seasons. I finally wised up and have switched to the BBB method. I had my CYA level checked 4 days ago and it had dropped from 150 to 115 after 2 drains and refills. My problem is that I have been using the Taylor test kit -2005 and my alkalinity levels are 150 but when I have my water checked at the pool store the alkalinity has been around 80. Does the pool store make any adjustments to the alkalinity that I should be doing? According to Taylor you should factor in your ph and CYA into a formula to get the correct alkalinity reading. When I did this I got a reading of 115. Any suggestions would be appreciated.