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Thread: Pucks and CYA

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    tcat's Avatar
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    Pucks and CYA

    How fast does CYA rise per 3" puck per 10K gallons? I am switching to liquid 6%, but I have a few pucks left. My auto chlorinator is set at "3". I have 1 more week of pool service before I take over(they are using liquid). I just drained 50% to get my CYA down to 65. Should I just turn the chlorinator to zero, or let them run out and not add more?
    IG pebble, 15,000 gallon
    48 PentAir DE Filter with backwash valve
    PentAir Whisperflo pump with 1hp 2-speed motor
    Aquabot 4WD, Poolskim
    Intermatic Dual Timeclock with freezeguard
    DIY chlorine feed
    BBB

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    Re: Pucks and CYA

    You can use poolcalculator.com to calculate how much CYA will be added to your pool.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    Mod Squad jblizzle's Avatar
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    Re: Pucks and CYA

    Using the calculator, each puck is approximately 3ppm CYA (depends on the weight of the pucks)
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    tcat's Avatar
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    Re: Pucks and CYA

    Wow! I think I'll turn it off and remove the pucks... CYA is probably back up to 75-80...
    IG pebble, 15,000 gallon
    48 PentAir DE Filter with backwash valve
    PentAir Whisperflo pump with 1hp 2-speed motor
    Aquabot 4WD, Poolskim
    Intermatic Dual Timeclock with freezeguard
    DIY chlorine feed
    BBB

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    Richard320's Avatar
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    San Dimas, CA (LA County)
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    Re: Pucks and CYA

    Pucks have a long shelf life if they are kept sealed up. Save them for vacation.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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