Will TSP to lower calcium hardness???

[Ozzzz]

waterbear,

Can you provide some product names for those calcium reducing products ? My fill water has about 350-400ppm calcium. This is the 3rd year for the water and with all the evaporation we experience in the Vegas area the CH is over 1000ppm. I am thinking about emptying the pool at the end of this season but if I can reduce calcium before that I might be able to alleviate some of the scaling before then.

[waterbear]

check with your pool store or online seach for calcium hardness reducer. You want a product that is a derivative of phosphonic acid. Many metal sequesterants will also reduce calcium. Read the bottles and see. If you can read the MSDS. That will usualy list phosphonic acid as a component.