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Thread: First numbers in. When to add CYA?

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    Join Date
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    First numbers in. When to add CYA?

    First full set of numbers are in.

    FC - 5.5
    Salt - 2730
    CC - 0
    CH - 75
    TA - 60
    CYA - 25
    pH - 7.2

    I added 30lb of salt but I'm not sure whether to adjust the pH first or add some CYA. I'm not sure what interacts with what.
    13000Gal / AG / Saltwater / Cartridge / Hayward Power-Flo LX Pump / Pool Age 5yr / TF-100 kit / Hayward Goldline Aquatrol SWG / Hayward Goldline Turbo T-Cell-5

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    Mod Squad tim5055's Avatar
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    Re: First numbers in. When to add CYA?

    You can do pH & CYA at the same time, but I wouldn't bother with the pH. As soon as you turn the SWG on the pH is going to begin to rise..

    Measure the amount of CYA Pool Math says you need and put it in an old sock. Either put this sock in the skimmer or hang it in front of a return. When raising CYA do it in two or three additions, testing between each. Remember, it can take up to a week for CYA to register on the test, so don't get frustrated in a few days and put more in.
    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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    Mod Squad pooldv's Avatar
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    Re: First numbers in. When to add CYA?

    Welcome to TFP!

    Here are some intro Pool School articles to read.
    TFPC for Beginners
    ABC's of Pool Water Chemistry

    Here are the Recommended Levels for your pool.
    Here is the Water Balance for your SWCG pool.
    Use PoolMath to figure out how much to add.
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    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Re: First numbers in. When to add CYA?

    Should i keep the pump running 24/7 with the cya in front of a return or let the pump switch off at night?

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    Mod Squad tim5055's Avatar
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    Re: First numbers in. When to add CYA?

    No need for 24/7.
    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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