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Thread: When to start using Chlorine Tablets on Newly Built Spool?

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    Join Date
    Mar 2018
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    Southern California
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    When to start using Chlorine Tablets on Newly Built Spool?

    Great site here. I have been reading up and trying to absorb as much info as a new pool owner.

    Spool was completed two weeks ago (details in signature) and I have been following the start up procedures described in the forum:


    • Pool Builder added sequestering agent on initial fill
    • Brushing twice a day for the past two weeks
    • Maintaining PH and Chlorine levels (testing daily)
    • Checking Alkalinity and Calcium Hardness levels (in correct range)


    PH levels seem to finally be leveling off, first 10 days PH would always be darker than the 8.2 reading and I have been adding liquid chlorine daily (10%). I have read different suggestions about when its ok to start using Chlorine tablets, some sites say wait 30 days, other say two weeks. Just looking to see what others here suggest.

    Thank you.

    20180225_092316 (1).jpg
    3,000 gallon Gunite/Plaster IG Spool, 8 x 16 Kidney Shaped, Pentair Intelliflo VSP, Pentair Clean and Clear Plus Cartridge Filter, Pentair Mastertemp Pool and Spa Heater, CMP Power Clean Chlorine Feeder, Paramount Clear O3 Ozone System, Two 18" Sheer Decents (2 feet high)

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    Mod Squad YippeeSkippy's Avatar
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    Re: When to start using Chlorine Tablets on Newly Built Spool?

    We don't actually recommend them at all for routine use. Unless you plan on draining and refilling each time the CYA level gets too high? With a small amount of water such as that it isn't unheard of. Otherwise you can use them anytime now.

    We prefer liquid chlorine or a salt water chlorine generator.

    WHen your pH rises you should use muriatic acid to lower it. Adding chlorine does not change the pH.

    Can you tell us -
    FC
    CC
    pH
    TA
    CH
    CYA

    Those are the levels you'll need to be able to monitor and tweak as necessary.

    Maddie
    Maddie :) 12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Skippy's Pool Cooler --> Skippy's New Fountain Our Build --> Our Pool Solved Our Sloping Yard

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    Mod Squad kimkats's Avatar
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    Re: When to start using Chlorine Tablets on Newly Built Spool?

    You can start using them as soon as the pool is filled BUT you do not want to use them at all except when you go on vacation.

    While the tablets are easy they are also something you do not want to use on a daily bases. The reason being they add other stuff to your pool. Most of them add CYA (Stabilizer). For each tablet you use you add about 6ppm of CYA. CYA does not go away. So the more tablets you use the higher the CYA goes. That bad part of that is show on this chart: Pool School - Chlorine / CYA Chart

    As you can see from the chart the higher your CYA the higher your FC needs to be. After a while you will not be able to add enough FC to keep ahead of the CYA...............that is when the green monster shows it's head-algae! The only way to lower CYA is to remove and add water WIth you being in CA (please add that info to your location) that could cause some problems.

    If you are just talking about using the tablets to add some CYA to your pool that is okay but not really a good choose as it adds it so slowly. You are better off adding it using the powder CYA you can buy at Walmart or Lowes.

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    riley00dog's Avatar
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    Re: When to start using Chlorine Tablets on Newly Built Spool?

    I just wanted to say how much I love your spool Its so cute and compact yet fully functional. Were currently building a 10x20 pool.


    3.2 x 6m | inground concrete | ~27,000 litre | 1.2 - 1.8m | salt and pepper mini pebble | SWCG Atral eq35| Viron xt 1.5 HP VS pump | Astral CA280 sand filter | DB3 robot | 2 x LED lights | travertine coping and paving | ceramic waterline tile |

  5. Back To Top    #5

    Join Date
    Mar 2018
    Location
    Southern California
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    Re: When to start using Chlorine Tablets on Newly Built Spool?

    Thank you everyone for the suggestions. I will look into adding CYA using a powder instead of tablets.
    3,000 gallon Gunite/Plaster IG Spool, 8 x 16 Kidney Shaped, Pentair Intelliflo VSP, Pentair Clean and Clear Plus Cartridge Filter, Pentair Mastertemp Pool and Spa Heater, CMP Power Clean Chlorine Feeder, Paramount Clear O3 Ozone System, Two 18" Sheer Decents (2 feet high)

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