Josh Posted January 6, 2004 Share Posted January 6, 2004 hi all Can some explain if my thinking on carbonate hardness is right? I believe that it is used to stablise your PH but what is the right level? Take my saulosi breeding tank for example. It has a PH of 8.0, which seams to never vary. A GH of 300ppm and a KH of 70ppm, which, according to my test kits, should be associated with a low PH, but mine stays where it should be. I am using HAGEN test kits for all my readings. Also can someone tell how to convert to the german versions of these as they seem to be used in all the fish profiles I read. Josh and Evelyn Link to comment Share on other sites More sharing options...
Nigel Posted January 6, 2004 Share Posted January 6, 2004 The gh is very high and the kh is very low. The correct reading for Lake Malawi is GH 120ppm and KH 140ppm. The way to convert from ppm to german degrees is 1 dh = 17.8ppm. I hope this helps. Link to comment Share on other sites More sharing options...
Josh Posted January 6, 2004 Author Share Posted January 6, 2004 thanks nigel, Are these hardness levels from the lake (wild) or what they should be in the aquarium? I was under the impression that most of the Malawi fish, in the aquarium had a dh of 10-20 and a dkh of 4-9? assuming i have them the right way around ie dh=gh and dkh=kh. Josh and Evelyn Link to comment Share on other sites More sharing options...
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