abso. acid treatment didnt change chemicals. is this normal?


Well-known member
Jun 12, 2010
i treated my pool today to remove iron stains. I used Natural Chemistry products. Stain Free and Metal Free. i did the treatment early this morning and have tested the water several times since. my chemical levels are:


since ive added the stain chemical this is the reading i keep getting. i will tell you i added baking soda yesturday to raise the Alk. (it was 70). dont know if this is the cause. the stain is gone so is it normal for your chemicals to be fairly ok...(CH has been low all summer)or is this out of the ordinary?


TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
Silver Spring, MD
Stain treatments will wipe out all of your chlorine. You need to add chlorine very slowly after a stain treatment and it might take a while before you can maintain an FC level again.

Other than that, your numbers look fairly normal.

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