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Old 01-29-2012, 05:47 PM   #18
Nubster
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Quote:
Originally Posted by diwu13 View Post
Hm... are you sure your kH and gH test is correct out of the tap? Or is your TDS measurement in degrees? Generally, if you're using a TDS meter it will measure in ppm, whereas the kH and gH tests are in degrees. In which case your TDS should at least be ~38.
The numbers you quoted are from the water out of the RO/DI filter. My tap water is:

pH 7.6
KH 5 (drops to color change, API test kit)
GH 6 (drops to color change, API test kit)
TDS 117
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