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Thread: Questions about closing

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    Join Date
    Jun 2014
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    SD
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    26

    Questions about closing

    I live in an area that freezes and must winterize my pool. I've followed the BBB method all summer with great results! After researching winterizing, I have a question about chemicals - one place I read said to bring it to SLAM level and close and the other place I read said to bring it to SLAM levels 3 days before and make sure it holds and then let it drift back down to normal before the close. Which should I do?

    Thanks so much!!
    30,000 gallon, 20x40, IG, vinyl, sand filter

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    Join Date
    Mar 2015
    Location
    Iowa
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    127

    Re: Questions about closing

    Quote Originally Posted by sdaggie View Post
    I live in an area that freezes and must winterize my pool. I've followed the BBB method all summer with great results! After researching winterizing, I have a question about chemicals - one place I read said to bring it to SLAM level and close and the other place I read said to bring it to SLAM levels 3 days before and make sure it holds and then let it drift back down to normal before the close. Which should I do?

    Thanks so much!!
    I do a 24hr and haven't had an issue.
    Doughboy AG 16' x 32' oval, 13,700 gal.
    AquaView by Doughboy 150lb sand filter model 0-1709-20
    PowerLine pump by Doughboy model 0-3047-200, 1.5hp-single speed-20amp
    Gulfstream electric heater-HE125-R-A
    Taylor K-2006 test kit

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    TFP Guide

    Catanzaro's Avatar
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    Jul 2014
    Location
    Monmouth County, New Jersey
    Posts
    2,175

    Re: Questions about closing

    Allow the TC level to drop to about 50% of the SLAM level, then add Poly-Quat 60 and allow to mix for 24 hours (if you can), then close the pool. Only add the recommended amount of Poly-Quat as this will consume a lot of chlorine. Happened to me and I had to add a little for bleach (for about 30 minutes), and then close. Each bottle treats around 20,000 gallons (If I remember correctly).
    14,700 gallons IG Pool Vinyl Liner - Octal Circulation System
    Hayward Pro-Series 350 LB. Sand Filter Model # S270T - 2" Plumping
    Hayward CL2002 Chlorinator - Hayward Super Pump 2 HP Model # k48m2n111
    Hayward AQR9 SWG 25K Salt Cell & TF-100 Test Kit + Speed Stir
    Gulfstream HE125RA - 117K BTU Heat Pump - Date of Build is 11-2013

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    Swampwoman's Avatar
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    Apr 2012
    Location
    Grand Rapids, MI
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    3,530

    Re: Questions about closing

    I believe either approach will work. I close 24 hrs after raising to shock/slam level, don't use polyquat, and open in April with residual FC of about 4 ppm.

    Letting FC drift back down for longer is necessary if you use polyquat as they compete
    In ground extended Grecian, 22,000 gal, Hayward 220t sand filter, vinyl liner, dolphin m4 supreme.
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    Join Date
    Apr 2010
    Location
    Central NJ
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    223

    Re: Questions about closing

    Open late (this coming weekend) and I open early (April), as soon as I see a hint of algae. I bring it to SLAM level 24 hours before I close, don't use Polyquat.
    23K gallon, IG, Vinyl, Hayward DE-3600 Filter, Raypak 406A Heater, Hayward 1.5HP SP2610X15 pump aka AO Smith UST1152, TF-100 Test Kit

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    Canned Heat's Avatar
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    May 2014
    Location
    Kewaskum, WI
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    12

    Re: Questions about closing

    24 hours after with continuous pump....and ditto on skipping the PQ
    AG 52" x 28' round Doughboy Tuscany 22,000 gallons / Hayward Pro-Series S180T Sand Filter / Hayward Power-Flo LX 1.5 hp - all hard piped

    Assumption is the mother of all screw-ups....

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