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Thread: Filter was off for a week and a half...

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    Filter was off for a week and a half...

    My pump died, and after several attempts at making it work, I gave up and had a new one ordered and installed. Now my pool is being filtered again after about ten days without.

    The water is crystal clear, other than stuff floating around in it. No signs of algae or anything like that. I did NOT keep up with the bleach while the pool was out of order.

    I can test the water later (I'm at work now), but I'm pretty confident chlorine will be about zero and pH will be about seven.

    I guess the questions that come to mind are: do I need to shock? And, whether or not I do, when is it safe to swim again (i.e. when will enough filtering have taken place)

    Thanks!
    32 x 16 20,000 gallon inground vinyl. Pool Genie filter. BBB seems to be working well so far despite high CYA. Aquabot Turbo T which I adore.

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    svenpup's Avatar
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    Re: Filter was off for a week and a half...

    Yes, you should shock whenever FC goes to 0. If you are correct, and nothing took hold, the shock should be very easy so why not do it?

    ETA, you can swim when you are done shocking. Read the how to shock article in pool school (link in my signature).
    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock (hint...it's a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

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    Re: Filter was off for a week and a half...

    Quote Originally Posted by svenpup
    Yes, you should shock whenever FC goes to 0. If you are correct, and nothing took hold, the shock should be very easy so why not do it?
    The expense and inconvenience of getting all of the bleach, of course. (at high CYA it will take a lot) I am not saying I shouldn't or won't do it, but that's why I would want to avoid doing so if possible.
    32 x 16 20,000 gallon inground vinyl. Pool Genie filter. BBB seems to be working well so far despite high CYA. Aquabot Turbo T which I adore.

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    Melt In The Sun's Avatar
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    Re: Filter was off for a week and a half...

    Well, you could just get FC up to your normal level and run an overnight FC loss test. Then you'll be sure.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
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    svenpup's Avatar
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    Re: Filter was off for a week and a half...

    You can add chlorine and see how your CC and chlorine demand work out. Do an overnight chlorine loss test, and if you pass that (and don't have high CC's) then you are probably OK.

    What can happen with a low level algae bloom (which may not be visible) is your chlorine demand is high, and you wind up going though a lot of chlorine without ever getting ahead of the algae. Essentially you are throwing away the chlorine, as opposed to shocking which, by design, will kill it all and get your chlorine demand back to normal.
    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock (hint...it's a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

  6. Back To Top    #6

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    Re: Filter was off for a week and a half...

    I just went ahead and shocked it. Wow, that was a lot of bleach to purchase and put in I put in a bit extra, in case my CYA and/or pool volume is a bit more than I figure.

    Tomorrow I'll tackle the pH...it's ALWAYS low...I can only imagine what it will be after not taking care of the pool for a week!
    32 x 16 20,000 gallon inground vinyl. Pool Genie filter. BBB seems to be working well so far despite high CYA. Aquabot Turbo T which I adore.

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    Re: Filter was off for a week and a half...

    I didn't have time to test in the morning, but test results tonight:

    TC 17 (MUCH lower than I expected...I used four big jugs and 11 little jugs of bleach to try and take it to 40 last night, given my high CYA)

    pH 8.0 (wow, like I said it's usually low, anyone know why it'd rise after a week and a half of no water maintenance?

    These aren't at all the numbers I expected...do they seem reasonable?
    32 x 16 20,000 gallon inground vinyl. Pool Genie filter. BBB seems to be working well so far despite high CYA. Aquabot Turbo T which I adore.

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