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Re: Aquatic Plants Digest V3 #907

Hi everyone,
I learned somwhere in the distant past that water is often described as having two
kinds of hardness, permanent hardness and temporary hardness. Temporary hardness
can be removed by boiling. By the way the hardness was because it was hard to get
soap to later. I think this is in the krib archives somewhere.

> Date: Sun, 14 Mar 1999 14:33:57 -0700
> From: ruddigar at home_com
> Subject: Boiling water
> I was always under the impression that boiling water would increase
> the hardness of the water (both DH and GH) because as the water is
> boiled, it evaporates.  Therefore, with less actual H2O molecules, the
> concentration of dissolves solids increases.
>   The reason you get a precipitate when you boil the water is because
> the concentration of the DS becomes so high that it can no longer stay
> dissolved.
> Jason Miller
> Sherwood Park, AB
> (780) 464-9635
> Steve Pushak wrote:
> > If
> > you boil the water, do you get heavy precipitation? This is one way to
> > remove carbonate hardness that is cheaper than RO. Boil the water!