what is KH?
what is KH?
i read it was somthing to do with plants? is this wrong?
Is is defined here...
ah i see
thanks again :wink:
I'm glad you understand, becuase I don't. LOL
Even with all my schoolin, I am still not too much edumecated. I guess I need to go back to school so I can learneded some more.
well i understand it basicly ?!
KH is carbonate hardness, temporary hardness, buffering capacity or alkalinity. This is a measure of the amount of buffering minerals in the water (mostly carbonates), that resist acidification of the water (it is basically the lime scale you see in the kettle).
The higher the KH, the more resistant your water will be when it comes to pH changes. Basically, if you were trying to use CO2, your KH should be no lower than 4dH otherwise, you have to monitor your pH carefully as low KH often results to pH crash. Your KH should measure higher than 4dH so large pH swings can be avoided.
To clarify further, KH is basically a pH buffer. The higher your KH, the more stable your pH will be and the more difficult to adjust your pH. If your KH is lower than 4, pH swings are likely to happen. Adding sodium bicarbonate will increase your KH therefore stabilizing the pH and preventing it from decreasing in all of a sudden which could result to pH crash killing the fish. If you use RO water, its KH is basically non-existent or zero, so pH can change dramatically with the use of RO water.
GH is general hardness or permanent hardness and is a mixture of calcium and magnesium salts. GH is independent to KH and pH.
Thank goodness. Eddie beat me.:sarcastic: :mrgreen:
blue your great thanks also :D :D
There's one thing that bothers me. CO2 can reduce KH according to the site Eddie linked into?:squint: I don't think that would be true. If we have the KH below 4.5 dKH and we inject CO2, obviously the pH will crash but not the KH which serves as a buffering capacity.
I encountered this one in hopes of finding out if CO2 can really reduce the KH.
The other possible mistake:
KH can be increased by increasing surface agitation.
~Again KH can be increased by addition of sodium bicarbonate but aeration will not obviously produce sodium bicarbonate. So this is a mistake, isn't it?
this is highly complecated stuff
:thankyou: :crazy: :crazy: :crazy: :crazy: lol my poor head cant take much more
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