let_her_flicker, I like your suggestion. You say that as long as I don't use the stabilized tablets, the CYA will go down naturally. As of two weeks ago, the only sanitizer I have used is bleach (Chlorox from a Sam's Club).

I think that the fact I have used the tablets and powdered "shock" since my pool was first opened 4 seasons ago has caused my CYA problem.

As long as I know the CYA will go down on its own without these "stabilized" products I can wait. Patience, after all, is a virtue when trying get pool water right.

Thanks for your help.

-Jim