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Thread: Is it true I should shock my pool at least four weeks?

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    Is it true I should shock my pool at least four weeks?

    Hi All! I'm new to TFP. I have a mesh safety cover over a 20x40, L shaped IG pool with a liner and live in the Northeast. Long Island to be specific. Is it true I should shock my pool at least four weeks before I plan to open? Folks also are telling me I need to add algeacide 1 week before opening. Can someone confirm if that is in fact true. I ordered one of the testing kits recommended on this site and will be testing upon receipt but was wondering if I should add water to the pool now to get it up to near skimmer level or wait until after it is opened.

    Thanks!
    40K, IG vinyl, Hayward Pro Series sand filter (S244T), Hayward chlorine feeder (CL-200), Aquabot Turbo T2 robot

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    4knights's Avatar
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    Re: Is it true I should shock my pool at least four weeks?

    Welcome to TFP!
    Glad you ordered your kit!
    Now read pool school (top of the page) once you have read POOL SCHOOL take a break to rest your brain and read it again. This same advice was given to me and it is some of the most valuable info I have received. There is an article about shocking the pool as well.
    The knowledge you gain will help you build confidence in your ability to maintain your Trouble Free Pool.
    Even with a swamp pool it should not take four weeks to get it blue.

    Filling the pool and opening depends on your preference and water temps. I'm in central Kansas and haven't opened yet due to weather and the pool temp still being low 40s.

    If you open it now you need to maintain it to keep it crystal clear.
    Ron- Kansas. IG fiberglass, Riviera 30 Freeform 13600 gallons,
    EasyTouch 4 w/IC20 SWCG, Pentair Whisperflo 1hp, 2 speed 220 pump, Hayward ProGrid 4820 DE filter using Eco Klean instead of DE, 2 Savi Melody 12v 5 color LEDs, Raypack 266k btu millivolt heater, Arctic Armour Mesh custom safety cover (Total self Install) TF-100 test kit w/Magic stir.

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    JasonLion's Avatar
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    Re: Is it true I should shock my pool at least four weeks?

    Welcome to TFP!

    There is no point in doing anything before you open the pool. You need to have the pool full and the pump running before you add any chemicals.

    With a mesh cover it is best to open at roughly the time the water temperature gets up to 50 degrees. Doing that will minimize the chances that you need to shock the pool at all, and shorten the time shocking takes if you do need to shock.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Is it true I should shock my pool at least four weeks?

    Thanks. I read Pool School and it didn't answer any of my specific questions hence my posting. I lifted the cover this afternoon and took a look and I can already see what looks like green algea. The pool gets a lot of sun. My concern was that the sun coming through the mesh cover was causing more algea to grow. Loop-loc recommends shocking before opening so thought I would ask here. I will monitor the water temp, remove the cover and fill the pool when it approaches 50 degrees and take it from there. Can't wait to post my first test results so you can all advise me on how to keep that monster crystal clear!
    40K, IG vinyl, Hayward Pro Series sand filter (S244T), Hayward chlorine feeder (CL-200), Aquabot Turbo T2 robot

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    Re: Is it true I should shock my pool at least four weeks?

    I'm not real sure I understand your question. Your title says something about shocking the pool for 4 weeks. Your first post says something about algaecide for a week.

    Either way, follow Jason's advice.
    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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    Richard320's Avatar
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    Re: Is it true I should shock my pool at least four weeks?

    If you have a proper test kit and you follow these directions: pool-school/shocking_your_pool you might be done in as little as a couple days. It just depends on diligence and how robust a strain of algae you have.

    Study pool school and bookmark http://www.poolcalculator.com/
    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.
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    Isaac-1's Avatar
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    Re: Is it true I should shock my pool at least four weeks?

    As a general rule around here we feel that algaecide is almost never needed in pool maintenance
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    hawkeye's Avatar
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    Re: Is it true I should shock my pool at least four weeks?

    Rule one have a nice test kit as the two kits that are recommended on this site,without it your spinning your wheels.also if you read pool school it explains that it that how long you have to shock depends on what the water test results say when you are ready to fire pool pump up. Anything the pool store told you or sold you toss it or throw it away cause all you will need is a few simple things other than a taylor test kit is liquid chlorine.im sure the pros on this site will chime in soon to help also, hope this make some sense

    18ft 52in deep doughboy 8000 gallons
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    harleysilo's Avatar
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    Re: Is it true I should shock my pool at least four weeks?

    No you don't need to shock every 4 weeks.
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    pwrstrk's Avatar
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    Re: Is it true I should shock my pool at least four weeks?

    I remember a time at the pool store when I told the manager that I never had to shock my water. His reply was then you must have some very green water. My reply was you are welcome to come and see my green water anytime you would like.

    I like to go there sometimes to stir the pot alittle.


    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: Is it true I should shock my pool at least four weeks?

    LOL...that's funny. I made the mistake of listening to the "experts" at the pool store once. They must have seen sucker written all over my face when I walked in. Very helpful comments everyone..thanks!
    40K, IG vinyl, Hayward Pro Series sand filter (S244T), Hayward chlorine feeder (CL-200), Aquabot Turbo T2 robot

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