GH and total hardness

Can someone answer this please. What is the difference between General hardness
and total hardness and how does it relate to KH?

TIA

General hardness and total hardness are the same. This refers to the
content of certain metallic ions present in the water, mainly calcium and
magnesium (which form carbonates, bicarbonates, hydroxides etc.).

General Hardness is a subset of the total dissolved ionic salt content of
the water.

Carbonate hardness (KH) is a subset of general hardness and is a measure
primarily of bicarbonate ions present, and as such is very closely linked to
alkalinity.

In other words, there is the total dissolved salt content of the water--of
which general hardness refers to the measure of certain types of these
dissolved salts and carbonate hardess (KH) refers to primarily one of the
dissolved salts that make up general hardness.

BTW I believe carbonate hardness is abbreviated KH because it is an
abbreviation of the phrase in german.


"TEACHSKIP" wrote in message
...
Can someone answer this please. What is the difference between General
hardness
and total hardness and how does it relate to KH?

TIA

See:

http://www.thekrib.com/Plants/CO2/ha...arryfrank.html

JLD

JLD,

Thanks for the reply and the link.

Skip...
See:

http://www.thekrib.com/Plants/CO2/ha...arryfrank.html

nice one Jeff, thankx...
....Kodiak

"Jeff Dantzler" wrote in message
news:1080843147.498249@yasure...
See:

http://www.thekrib.com/Plants/CO2/ha...arryfrank.html

JLD

GH=Total hardness=permanent Hardness + temporary hardness
Temporary hardness = carbonate hardness=KH.
In simple terms temporary harness is also referred to as Alkhalinity.
....Kodiak

"TEACHSKIP" wrote in message
...
Can someone answer this please. What is the difference between General
hardness
and total hardness and how does it relate to KH?

TIA

On 30 Mar 2004 23:30:35 GMT, TEACHSKIP wrote:
Can someone answer this please. What is the difference between General hardness
and total hardness and how does it relate to KH?

See responses in other groups and next time PLEASE CROSS POST
if you are posting identical content!
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