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I think you are spot on there because I have always had a milkly residue at the bottom of the boiler after this process and I've always thought it must be a good element of the calcium rather than just precipitated carbonates. Although it was a simple process, I am now seeing that it is a bit of...

Well I do now as a result of your comments. I've done some research and got my local water report. The mean alkalinity is 300 mgHCO3/l and the calcium 130 mgCa/l, which suggests (I think ) that I have been overdoing it on the calcium addition front? I've read your article on water treatment...

I don't do anything too sophisticated to treat my water. I just follow Graham Wheeler's simple water treatment method. Which is to boil the required water and for a 23/25 litre batch add 10 g of calcium sulphate once boiling point is reached and to boil for 30 minutes. Then leave it to cool and...