12-11-2019, 09:48 AM
Join Date: Jan 2011
| | Re: GH and KH issues
Originally Posted by Gerald
To a chemist, water hardness is a measure of divalent cations (Ca+2, Mg+2, Fe+2, etc). That's what a GH test kit measures. Apparently you have water with a high total mineral content, but low amounts of the +2 ions that contribute to hardness. People with less understanding of chemistry might refer to any water with high mineral content as "hard". You can add heaps of sodium, potassium, chloride, sulfate, bicarbonate, etc into water and it won't change the GH hardness.
So you would say I have soft water?