We use GAC filtration with gravel beds to strip out chlorine/chloramine. I figured if I was sending a sample to Ward Labs I might as well check before and after the filter to satisfy my curiosity if nothing else.
Water was run for over 10 minutes in filtration mode before sample and then we switched over to bypass and ran a few more minutes before the unfiltered sample.
Results;
What could cause this difference in total alkalinity?
Water was run for over 10 minutes in filtration mode before sample and then we switched over to bypass and ran a few more minutes before the unfiltered sample.
Results;
Code:
UNFILTERED FILTERED pH 7.3 7.7 Sodium 8 9 Calcium 33 34 Magnesium 9 9 Total Hardness 120 123 Sulfate 6 4 Chloride 16 16 Total Alkalinity 82 108