When I use stain removing products (like Jack’s Magic) that contain phosphoric acid, I have trouble keeping a chlorine balance in my pool. Is there some type of interaction going on here?


There may be an interaction going on. When using phosphoric acid based stain removal products you may want to try adding a phosphate remover to see if that helps lower the chlorine demand. Phosphates will also feed algae in your swimming pool if an outbreak occurs.

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