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Thread: How soon can I use my SWG after adding CYA?

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    appstategrad's Avatar
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    How soon can I use my SWG after adding CYA?

    I am on my second "sock in the skimmer" of CYA, so I've added about 3 lbs total. I started with 0 CYA so I have a while to go to get my CYA to the recommended level of 70-80.

    I currently have no chlorine in the water. Can I add liquid bleach now with the CYA sock in the skimmer basket? If not how long do I wait? Or, when will I be able to turn on my SWG? Pump and filter are running and water is clear.

    Thank you in advance for your assistance.
    ~ 18.5' x 36.5' inground Grecian pool with vinyl liner
    ~ approximately 23,000 gallons
    ~ AquaRite Salt Water Generator cell size t-9
    ~ 1.5 HP Hayward Pump and Hayward Sand Filter
    ~ TF-100 test kit

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    Mod Squad tim5055's Avatar
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    Re: How soon can I use my SWG after adding CYA?

    Yes, go ahead no add chlorine manually to get some in there and start the SWG.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    appstategrad's Avatar
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    Re: How soon can I use my SWG after adding CYA?

    Thank you!
    ~ 18.5' x 36.5' inground Grecian pool with vinyl liner
    ~ approximately 23,000 gallons
    ~ AquaRite Salt Water Generator cell size t-9
    ~ 1.5 HP Hayward Pump and Hayward Sand Filter
    ~ TF-100 test kit

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    Mod Squad tim5055's Avatar
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    Re: How soon can I use my SWG after adding CYA?

    Chlorinate based on the assumed level of CYA you have floating.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    appstategrad's Avatar
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    Re: How soon can I use my SWG after adding CYA?

    PoolMath says to add 224 ounces of CYA (measured by weight) to get to a level of 70. So, when I add chlorine tomorrow evening I will assume all 48 ounces has been dissolved, which would be 21.4% of my total CYA added. 21.4% of 70 would be 14.98% of assumed CYA floating...is this a correct way to calculate?
    ~ 18.5' x 36.5' inground Grecian pool with vinyl liner
    ~ approximately 23,000 gallons
    ~ AquaRite Salt Water Generator cell size t-9
    ~ 1.5 HP Hayward Pump and Hayward Sand Filter
    ~ TF-100 test kit

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    Mod Squad tim5055's Avatar
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    Re: How soon can I use my SWG after adding CYA?

    How much have you actually added already buy weight.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    appstategrad's Avatar
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    Re: How soon can I use my SWG after adding CYA?

    I would guesstimate about 1.5 lbs is currently in the water, and the other 1.5 lbs in the sock now.
    ~ 18.5' x 36.5' inground Grecian pool with vinyl liner
    ~ approximately 23,000 gallons
    ~ AquaRite Salt Water Generator cell size t-9
    ~ 1.5 HP Hayward Pump and Hayward Sand Filter
    ~ TF-100 test kit

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    Mod Squad tim5055's Avatar
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    Re: How soon can I use my SWG after adding CYA?

    If only 1.5 pounds is in the water chlorinate based on that. When you put the other 1.5 pounds in adjust accordingly. Chlorinate based on what is in the water, not where you plan to get to.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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