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KH bigger then GH ?
Roger S. Miller wrote
"Why is that? Alkalinity (KH) in my water is seven or eight times
higher
than my GH and I've never attributed problems to that ratio. I *really*
don't see a reason for prescribing KH that is 70% to 80% of the GH."
Well Roger,
I am not a chemist, therefore I digged out some literature on the
subject,
the professionals on the list may put it together in a more
"understandable" way.
"In 90% of all natural waterbodys, GH is bigger then KH.
The KH is normally 80% of GH.
The condition KH bigger then GH is undesirable and switches the
Ionen spectrum physiological."
Krause-Aquarium Water
Kationen
Anionen GH KH
GH bigger KH Ca2+ HCO3-
2 : 1
Mg2+
SO42- 20 10
-----------------------------------------------------------------------------------------
GH equal KH Ca2+ SO42-
1 1
Na+
HCO3- 15 15
-----------------------------------------------------------------------------------------
GH smaller KH Ca2+ SO42-
1 2
Na+
HCO3- 10 20
-----------------------------------------------------------------------------------------
Baensch Atlas # 1
Long-term consequences for maintaining a closed eco system under these
conditions
are documented. (GH smaller KH )
Well, if you allow me to use your own words,
this is eventually "more then every one needs to know"
'hope I still stay correct ?!?
Juergen