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do you need to know what your tds and ppm

do you need to know what your tds and ppm

02-13-2009, 07:15 AM

Sandy

Junior Member

Join Date: Feb 2009

Posts: 4

do you need to know what your tds and ppm

ron- do you really need to know what your tds and ppm are or can you get along just monitoring ph?

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