From: ouasami@do-not-send.com   
      
   On 14/11/18 17:13, Martin Brown wrote:   
   > On 14/11/2018 01:39, Oumati Asami wrote:   
   >> I need to have the chlorine generator fixed soon.   
   >>   
   >> Wikipedia says the solubility of calcium carbonate is 13 mg/L.   
   >> Somewhere on the web it says the calcium concentration needs to be   
   >> between 200 and 400 ppm. Other than carbonate, is there any other   
   >> calcium salt that has lower solubility? I'm thinking of adding an   
   >> anion to precipitate calcium. I can't afford to use ion exchange to   
   >> remove calcium.   
   >   
   > Calcium carbonate is about the least soluble of the calcium salts. The   
   > calcium dissolved in your swimming pool is present as the *bicarbonate*.   
   >   
   > See https://en.wikipedia.org/wiki/Solubility_table#C   
   >   
      
   Thanks for the info.   
      
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