Thread: KH n PH
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Old 03-06-2008   #8 (permalink)
KoiCop
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Quote:
Originally Posted by gspotmc View Post
What about GH? 14 drops
Converting drops (German hardness) to ppm for KH and/or GH works the same: # of drops x 17.9 = ppm

So, 14 drops x 17.9 = 251 ppm
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