I have metal in my well water. Before this year, the pool was a seasonal that I took down every year so I would just guess at the amount of sequestrant I needed. This year with the permanent pool, I am wondering if I should get a kit like this:
http://www.amazon.com/Jacks-Magic-Seque ... B0071NLP3K
I am happy with the Jack's Magic products and plan to keep using them.