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Thread: Calculate the addition of fresh water while shocking

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    Calculate the addition of fresh water while shocking

    Hi all! I'm in day 3 of the shocking process, starting with 0 TC and a CYA of 40. I have been successful at managing the TC level to be at shock level (16 is target number), but with all the algae I'm killing off, it is causing me to back wash my DE several times a day, which has lowered the water level to a point that requires me to add more fresh water.

    I'm on a well system, and I don't know if there is a (relatively) easy way to calculate how this new water will impact the TC count, to ensure I'm not constantly fighting an uphill battle.

    Thanks for any thoughts and feedback!
    18x36 IG vinyl, Sta-Rite S8D110 DE Filter, Intelliflo VS +SVRS, IC40 SWG, 2 skimmers & 1 main, 1 1/2" plumbing, 2" at pad, Aquabot Turbo T

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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Calculate the addition of fresh water while shocking

    There is a very easy way to determine that ... fill the pool, circulate, and re test
    Jason, TFP Moderator
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