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Thread: Green Pool (Was black at first)

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  1. #1
    Join Date
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    Default Re: Green Pool (Was black at first)

    Updated my numbers for today.

    Have 50lbs of the Dichlor with the 56% available chlorine. Not entirely sure how much to add though. Do I build it up slowly?

    Used some pool calculators and it looks like 9oz yields around 1 PPM of FC and 0.9 CYA. Looks my goal is 40 CYA.

    Will start with 72oz as it's easier to add as I think that I need a lot more. Current FC is 8.28.
    30k gal IG vinyl pool, Hayward S200 filter, Pentair 2HP SuperFlo, 24hr ops. PF=4

  2. #2
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    Default Re: Green Pool (Was black at first)

    Yes, slowly.

    Basically, simply use it to chlorinate, till your CYA is at your target level.

    You'll find that initially (while CYA is low) you'll lose chlorine quickly. But as the CYA increases, chlorine levels will be more persistent.

  3. #3
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    Default Re: Green Pool (Was black at first)

    Added today's numbers. Didn't measure CYA as I understand below 30 no way to measure with my tools, my best guess based on FC level is around 9 as my FC went from 8 to 18 ppm (Had overcast and no sun).

    Will add another 72oz of dichlor. Water still light green. Can see bottom. Not filtering just circulating and aerating.
    30k gal IG vinyl pool, Hayward S200 filter, Pentair 2HP SuperFlo, 24hr ops. PF=4

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    Default Re: Green Pool (Was black at first)

    Until your CYA is higher, add your large doses late in the day, so they can work all night before being hit by sun.

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