Quote Originally Posted by gonefishin
Hi ibalr1

glad you found the forum...hope you find it as useful as I have.


I am a total pool noobie...so I'm asking for clarifications sake>>>


How did you get your CYA to drop 58 points in a day?

did you get the sample done at the same places? (no matter if with the same test kit...or from the same store)

Did you partially drain and refill your pool?


I suppose that's my largest question...

thanks,
dan
Same pool store, same pool guy. The only things we did between samples are:
  1. remove solar cover (temp of pool on 5/28 was 92, on 5/29 it was down to 86)
  2. add 12# sodium hydrogen carbonate

Your question is intriguing, since all I have read in the last couple of days regarding CYA says the only way to lower it is by draining water and replacing it with fresh.