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Thread: Closing chemicals needed

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    Closing chemicals needed

    Hi.

    I am beginning to think about closing our pool and I was wondering before I go online to buy a closing kit I was wondering if there is a list I should go from? I expect to have my TF-100 tomorrow and will post the results, but I wanted to ask because I was looking for a list and couldn't find one. I know the steps of blowing lines, gizmos, below the skimmer line drain as I closed my pool last year, but I am more interested in the chemicals that should be added. I realize that much of this has to do with the chemicals in the pool now, but just figured I would ask. I am not going to close it for a couple of weeks but I am just thinking about it now.

    Thanks!
    IG Vinyl -30,000 (20x40)
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    zimm's Avatar
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    Re: Closing chemicals needed

    I would bring up the pool to SLAM level for your CYA with bleach. As long as everything else is balanced, that's it! Some members dump in polyquat (I did last year) because I close with my pool water too warm (I have tons of trees that drop leaves) and figured it can't hurt. I didn't have a swamp when I re-opened this spring. I found the polyquat on amazon.
    45'x12' 17k gal, IG plaster, Pool Pilot Nano+ SWG, 1/2hp Whisperflo pump, PAC-FAB TA-60D sand filter, Raypak 266 heater
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    Re: Closing chemicals needed

    Step by step with what chemicals you'd need - - > http://www.troublefreepool.com/conte...in-ground-pool
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. ? too cold
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
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    Mod Squad JVTrain's Avatar
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    Re: Closing chemicals needed

    You'll also need several gallons of RV antifreeze to dump into underground lines and skimmer after you've blown them out. Make sure it's RV antifreeze, not automotive. I may do the polyquat this year, depending on when I decide to close. Outside of those two, you'll just need the extra bleach to bring up to SLAM level.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
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    Re: Closing chemicals needed

    Because I have extra powder shock and want to use it and get rid of it, is that a big no no?

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    Re: Closing chemicals needed

    Quote Originally Posted by Amanda14 View Post
    Because I have extra powder shock and want to use it and get rid of it, is that a big no no?
    Assuming you're talking about dichlor, it will raise your CYA for next season. The amount of dichlor necessary to raise 30,000 gallons of water to shock level will raise the CYA by 7-10 ppm. I guess if you're having to replace water in the spring it might work for you. Just be careful not to end up over your target once everything is up and running next year.
    18'x4' AG Intex Ultra Frame, 6,700 gal., assembled new 2013; Mods: Hayward EC50C90 Perflex filter & 1 h.p. PowerFlo Matrix pump, Fiber Clear cellulose D.E. substitute, Hayward H100ID1 100,000 BTU NG heater, a pair of 2'x20' Sungrabber solar heaters via the original Intex 635T pump, grey Hydro Tools through-the-wall skimmer, Confer steps/ladder system & Cover Free chemical pool cover. The Summer of Mods!

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    Re: Closing chemicals needed

    You might want to save it rather than toss it in now. If you're going to dump water to winterize you might need the CYA in the powder shock after opening the pool. You'll need the FC anyway but it would be killing two birds with one stone so to speak and it would also leave you lower in CYA when you open so less bleach needed ($$) to SLAM when you open.
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. ? too cold
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
    TF-100, Best test kit - TFTestkits.net
    Please help keep the lights on, become a TFP Supporter!

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    Re: Closing chemicals needed

    Thanks- my hope is to have the TF-100 tomorrow and get rolling but I would like to use my leftover chemicals before getting the bleach etc

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    zimm's Avatar
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    Re: Closing chemicals needed

    Save your chemicals- you might need them. What are the ingredients of the powdered shock? dichlor or sodium-hypo? As stated, I wouldn't use it until you know your CYA. If needed, then great. If your CYA is high, then no.

    TFP isn't just using liquid bleach, it's about knowing your levels and only adding what the water needs, not dumping whatever you have and hope for the best.
    45'x12' 17k gal, IG plaster, Pool Pilot Nano+ SWG, 1/2hp Whisperflo pump, PAC-FAB TA-60D sand filter, Raypak 266 heater
    Pool School + Test Kit + Pool Math = Trouble Free Pool

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    Mod Squad JVTrain's Avatar
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    Re: Closing chemicals needed

    It depends on your current CYA, how much you intend to use and how much water you drain during closing.

    For instance, say your CYA is 40 and that's been working great for you. At closing, you add 6 lbs of dichlor shock to get FC from 3 to 16. This will also raise your CYA by 12, to 52. Then if you drop your pool level by 1 foot, you'll be replacing about 6000 gallons in the spring. When you refill, if it takes the full 6000 gallons you will have replaced 20% of your pool volume, bringing your CYA from 52 to about 42. It may not be a bad thing depending on how much you use. But then your SLAM level is already higher in the spring...
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Re: Closing chemicals needed

    TFP isn't just using liquid bleach, it's about knowing your levels and only adding what the water needs, not dumping whatever you have and hope for the best.

    You mean what I have been doing for years? Oh I hear you!!!!!!

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    Re: Closing chemicals needed

    Quote Originally Posted by Amanda14 View Post
    Thanks- my hope is to have the TF-100 tomorrow and get rolling but I would like to use my leftover chemicals before getting the bleach etc
    I saved my dichlor. I started off with CYA around 180 2 years ago. Dumping water wasn't an option as my pool is 440000 litres, so it took me the last 2 years of backwashing to get CYA down. Earlier this year my CYA had gone down to 30ppm so the saved dichlor came in handy to get it back up. Now I intend to keep a small amount of dichlor on hand just for such eventualities.
    400,000 Litre in ground infinity pool, with 40,000 litre holding tank (116 235.703 04 gallon). Vinyl liner.
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    Re: Closing chemicals needed

    I guess you intended to say dumping it all at once wasn't an option. I would love to see pictures of that pool.
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. ? too cold
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
    TF-100, Best test kit - TFTestkits.net
    Please help keep the lights on, become a TFP Supporter!

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    Mod Squad JVTrain's Avatar
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    Re: Closing chemicals needed

    Quote Originally Posted by kiss4afrog View Post
    I would love to see pictures of that pool.
    http://www.troublefreepool.com/threa...483#post341483

    Stalk /off
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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