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Thread: Year 2 Pool Opening

  1. Back To Top    #1

    Join Date
    Jun 2013
    Fuquay-Varina NC

    Year 2 Pool Opening

    Hi everyone! Thanks a ton in advance. You have been lifesavers for us. I have a couple of questions about our numbers and what to do now that we have started adding bleach.

    This is year two with our pool, and we started a little hastily with adding bleach before testing the water. We figured, it's blackish green with floating algae, we need bleach! We have been adding bleach since Monday. The water is now a cloudy olive green. I did the first round of testing this morning and here are my numbers:

    FC = 1
    CC = 1
    TC = 2
    TA = 20
    pH = 6.8
    CH = 70
    CYA < 20 (note on the CYA: it was getting a little cloudy but I could definitely still see the black dot in the CYA tube. Instructions says to write down the numbered line it's closest to, but it was only closest to 20 because I couldn't add any more water/reagent mixture without overflowing.)

    According to the Pool Math, we need to raise the CYA, TA and pH.

    My question is, since we have started adding bleach, what should we focus on (or an order of what to focus on would be great!)? I read pH is not reliable while shocking, and you can't add CYA and then backwash, which we are still doing a few times a day at this point.

    A related question: before we found this site last year we were getting trichlor (pucks and powder) for chlorine, and now we have lots of it from last summer because we couldn't return it. I have read that this raises CYA but can lower pH/TA. Can we use this to improve our numbers?

    Thanks for all your help.
    First-time Pool Owners
    25K gal. - IG - Vinyl - Sand Filter (Tagelus TA60 325 #) - unknown pump HP/speed - Built 2000

  2. Back To Top    #2

    Join Date
    Jun 2013

    Re: Year 2 Pool Opening

    As detailed in the slam process I would get the PH up to 7.2 and then start the slam process by putting in the appropriate amount of chlorine. You don't have a problem with CH or high CYA so you could use the trichlor for the slam process and it would also raise cya but it will also lower PH.
    IG plaster, 22,000 gallon, Jacuzzi Laser Sand filter

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