hardness

  1. K

    CH low, CSI ~0, concern?

    Not sure what happened, this past winter, the PH and TA did creep up to 8.1 and 120, and the calcium dropped from 230 down to 130. Added some calcium and brought it up a little. Any long term concerns with CH - 170 if I maintain my TA and PH within a reasonable range? Any reason to try and...
  2. Dormdweller

    Soda Ash to Lower Calcium?

    Going through the forums I see a lot of Questions regarding cool owners that have very high calcium levels and people who struggle to get the calcium in line. Theoretically chemistry wise, adding soda ash to the pool should raise the pH locally enough which makes the pool cloudy and traverse in...
  3. frenchredneck

    High salt & low hardness challenge

    Hi all, Due to initial misjudgment of pool size, too much salt was added and ppm ended up at 4200 for 3600ppm ideal per SWG user manual. At the same time water hardness was very low at 90ppm. Several water corrections were made including adding some Hardness + to try to bring harness closer to...
  4. J

    Calcium Hardness Test & pH question

    So the R-0012 drops come out super small. Way smaller than the other bottles. Is this normal?? It is giving me readings of 1250 ppm and I know my water is hard but yikes. Also, my pH is 7.5 and the pool math app is telling me that I need to raise it to 7.6 is this necessary? It is in the...
  5. T

    Low calcium and fiberglass pool

    First year with our pool and I’m still getting the hang of this chemical testing. From what I understand, since I have fiberglass, the fact that my calcium hardness is a little low is immaterial to me right? The pool math app keeps telling me to adjust it and add 50lbs of stuff and I figured...