Quote Originally Posted by aylad View Post
I Is it possible that the pool surface is degrading and causing it? Are you positive that your testing methods are correct and that you're using fresh reagents?

Janet
Just received fresh reagents in the mail yesterday, and the ones I have run all the way through trying to keep up with this were new 2 weeks ago. Pretty sure my method is correct. How would I know if my pool surface (vinyl liner) is degrading? There are no areas of discoloration or other indication of damage. Guess I'll try to keep up the bleach. How safe is it to take it up close to 30 in the morning so it doesn't get as low during the day when I can't be here?