I went to Leslie's today and had my pool water tested. Everything is fine but they told me to put 8 pounds of calcium hardness in the pool. This will be my third season and no one has ever told me to do that to me before. Do I need to buy their 8 pound bucket or is there something cheaper to use to raise the calcium level?
I have a above ground 7500 gallon pool and live in Va. We fill it with city water.