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Hard Water?

Tom Barr wrote:

>So how is the KH and GH were your at then? Mine's a little bit more than the
>SF group were I live.
>KH of 5 - 5.5 and a GH of 8-9. Higher than I would've thought considering
>our source of rainwater mainly. This also interests Steve too, as the
>differences can have some interesting effects and are worth knowing about
>each person's tap water to see any similarities. 

My KH and GH are between 5 and 6.