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Thread: Swimming after chemicals, plus chronology of additions

  1. Back To Top    #1

    Join Date
    Jul 2015
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    Scotch Plains, NJ
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    Swimming after chemicals, plus chronology of additions

    Hi all,

    I have a couple questions, but first some info. My PH spiked, likely as I have new plaster, so last night I put a gallon of muriatic acid in and today we're good. Here are my morning readings.

    FC = 1.5
    PH = 7.2
    TA = 90
    CH = 170
    CYA = 30

    The CH has been low for some time now so this morning I put 10 pounds of calcium chloride in. I am looking to add 1 gallon of liquid bleach and 1 lb of stabilizer to get the FC and CYA up a bit.

    Questions:

    1. Are there any restrictions or chronology to how/when you add your chemicals?
    2. Assuming there are no objections to what I am adding above (haven't yet added chlorine or stabilizer), when will it be safe to swim after these chemicals are introduced?

    Thanks everyone. Love this forum!

    Steve
    1964 Sylvan 18' x 46' in-ground - 32,000 Gal - re-plastered June 14, 2015, Diamond Brite quartz plaster - Hayward DE 4820 Filter - 1.0 HP Emerson motor with a Hayward super pump

  2. Back To Top    #2

    Join Date
    Jun 2015
    Location
    East Hampton CT
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    Re: Swimming after chemicals, plus chronology of additions

    Liquid doesn't necessarily disburse throughout the entire pool immediately, however, it dilutes as soon as it hits the pool water. That said, I've seen on this forum the recommendation of waiting a 1/2 hour between adding different chemicals as well as for wait time to swim after recently added chemical. Truth be told, I'd hold off on swimming a little longer after adding muriatic acid, but since you added it last night, you're probably good. Wait time to swim for CYA doesn't matter. Put the stabilizer granules in a sock, tie it off, put the sock in the skimmer, and commence swimming. Same with pH+. At the end of the day, it is only baking soda.

    My 3 year old (rounding up) had a swimming lesson yesterday evening. I added some LC in front of my deep end return. By the time we got him settled down, changed, and in the water, it was about 30 minutes. I thought nothing of the fact I had just added chlorine.
    Chris
    17' x 35' outdoor in-ground Grecian shaped w/ vinyl liner. ≈ 21,000 gallons. Hayward S-200 Sand Filter and 1 HP Hayward Super-pump. Other Accessories: slide, light, ladder, fiberglass stairs, TF-100. Baquacil Conversion - June 2015, SLAM How-to, Chlorine/CYA Chart

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    Join Date
    Jan 2014
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    Buckeye AZ
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    807

    Re: Swimming after chemicals, plus chronology of additions

    I'll add 24 oz of bleach at one end of the pool and 24 oz of MA at the other end, within a few minutes. But I have good circulation in my pool.
    10,500 gal IG, Topaz Pebble, auto-level
    Hayward DE filter, 2HP Ecostar VSP, ProLogic PS-4, GVA actuators
    Cal Pools Wave Force Plus (wall return jets plus 2 floor pop-ups), Venturi Skimmer
    Water sheer, 2 wok pots, bubbler stem on the baja step
    ColorLogic Mutlicolor LED lamp. Taylor 2006+speed stir

  4. Back To Top    #4

    Join Date
    Jul 2015
    Location
    Scotch Plains, NJ
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    33

    Re: Swimming after chemicals, plus chronology of additions

    OK thanks All.
    1964 Sylvan 18' x 46' in-ground - 32,000 Gal - re-plastered June 14, 2015, Diamond Brite quartz plaster - Hayward DE 4820 Filter - 1.0 HP Emerson motor with a Hayward super pump

  5. Back To Top    #5

    Join Date
    Jul 2012
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    Central Texas
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    436

    Re: Swimming after chemicals, plus chronology of additions

    I have 3 swim jets in mine that I turn on whenever adding chemicals. I've actually tested pH, added muriatic and tested pH again as quickly as it takes me to walk to the other end of the pool and reach deep down. And it was changed. But I still wait 30 minutes and let the pumps circulate the heck out of it <G>
    Central TX / 12K GAL / IG / SWG / DE filter / Pentair SVRS & 3 swim jet pumps / Spa bench and jets / Single body of water / No heater.

  6. Back To Top    #6
    Texas Splash's Avatar
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    Jun 2014
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    South-Central Texas, Marion/San Antonio
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    12,968

    Re: Swimming after chemicals, plus chronology of additions

    The official TFP response would be: You can add chemicals 30 min apart from each other (stabilizer in sock anytime) with pump running 30 min after addition to circulate throughout the water. Using a brush to help stir the chemical in the area is encouraged. As always, pay particular attention to handling chlorine and muriatic acid at the same time and/or within the same vicinity to avoid a volatile chemical reaction. The Pool School - Recommended Pool Chemicals page has more info. From time-to-time, you may see the need to adjust two items at once (i.e. TA and PH) in which case there may be one product better suited for that purpose.

    In regards to swimming, once the PH is within limits for skin & eyes, you can generally go in the water 30 minutes after adding chemicals if the pump was on high circulating everything. If you did a heavy does of acid, maybe give it an hour just to be safe.

    As you can expect over time, some of us "bend" a rule or two from time to time based on the size of the pool, experience, or just because we're a bit stubborn. When in doubt, lean towards safety! Enjoy.
    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
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
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    Join Date
    Jul 2015
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    Scotch Plains, NJ
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    Re: Swimming after chemicals, plus chronology of additions

    Thanks Texas Splash. This is very helpful. I haven't had this much fun since I was an owner of aquariums and stressing my chemistry every day with them, lol.
    1964 Sylvan 18' x 46' in-ground - 32,000 Gal - re-plastered June 14, 2015, Diamond Brite quartz plaster - Hayward DE 4820 Filter - 1.0 HP Emerson motor with a Hayward super pump

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