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Thread: Winter water balance questions

  1. Back To Top    #1

    Join Date
    Jul 2014
    Location
    kamloops bc
    Posts
    39

    Winter water balance questions

    It is getting close to closing time, so after a couple of very sunny month's I have been testing and trying to keep water balanced with pretty good success. However I have been wondering about Alkalinity? It has been between 150-170 all month, when I read about ALK in Poolschool it says not to lower just to reach a target. Non of the symptoms for lowering are apparent in my water. I will post my last test results and maybe someone can advise if I should deal with anything in particular before closing?

    FC--6.5
    CC->.5
    Alk-170
    Ha- 150
    Ph--7.4
    CYA-60-70 (we know the grey in that test :>))
    I have been adding Ph up through the summer, seems like it falls to 7.2 every couple of days and I raise it to 7.4, not sure if this is okay or if I should try to get it higher? Have been vacuuming on drain in an effort to bring down Alk and CYA but not happening, tap water here very low Alk.
    Have used pucks for about 10-14 days over the summer when away.
    14 x 28 IG, Hayward sand filter, Hayward 3/4hp pump, auto puck chlorinater,(used only when away) Hayward Natural gas heater, vinyl liner

  2. Back To Top    #2
    Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,942

    Re: Winter water balance questions

    Your test readings are not all that bad, although based on a CYA of 70 (to be safe), your FC target should be 8, and never go below 5. Your TA is slightly elevated, but not extremely high. If your pH has been dropping, it may be due to the pucks you've been using. Some will tend to drive-down pH. You can use a combination of aeration to help keep the pH up as well versus chemicals. As for closing, simply follow the instructions here at Pool School - Closing an In Ground Pool and you should be just fine. If you still have questions, please let us know.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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