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Posted by Jeffrey St. Clair, Ph.D. on November 12, 2007, 11:42 am
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> Free rain water. Hundreds of gallons from the outbuilding roof mixed with
> my tap water brought the PH down to 7.4 and the hardness in the area of
> 200ppm. As long as it rains once in awhile I'll have more than enough
> water for water changes. :-)
>
> The PH of the rain water was 6.6 to 6.8.
Sounds good, just make sure you collect it from a clean roof, (standard tar
roof not advisable) and clean all the pollutants out. :)
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> my tap water brought the PH down to 7.4 and the hardness in the area of
> 200ppm. As long as it rains once in awhile I'll have more than enough
> water for water changes. :-)
>
> The PH of the rain water was 6.6 to 6.8.