Quote:
Originally Posted by goodgollymissmolly
Shakkai, I think you are talking about two different things. RO simply removes ions from the water. It's a high class filter if you want to think of it in that way though that's not technically accurate. It removes ions (mostly Ca++ and Mg+ but also anything else in solution) and leaves essentially pure water similar to distilled water.
Ion exchange is a method that substitutes sodium (Na+) ions for the hard water ions Ca++ and Mg+. The Na+ does not cause the bathtub rings and lack of soap suds that the hard water ions cause.
Consequently ion exchange does produce water high in sodium (Na) content which can be bad for some high blood pressure cases. I do not think RO could possibly cause problems because it produces pure water. I guess you could still drown in it though.
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Yep. I understand the difference... I was just quoting from what the Water Inspectorate said, and they had the two statements listed - one under RO systems, and the other one under Base Exchange Softening.
I think what they actually mean is that any water that is 'soft' (i.e. doesn't have calcium & magnesium in it) is not really healthy to drink. However it get that way.... I'm not that into nutrition to understand why - though I do understand the connection between salt and heart problems/high blood pressure.
In any case, it was not really related to the topic at hand - which is feeding and watering our plants - not ourselves!!
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