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Thread: SLAM'ing for a week

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    Join Date
    Jul 2012
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    Illinois
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    SLAM'ing for a week

    Hi TFP gurus

    Hate asking for help but need a little at the moment it would seem.

    Slacked off on the pool maintenance at the end of the year letting my FC slip to 0 and I'm paying for it.

    Been SLAM'ing for a week pool is looking much better but can't seem to finish it. What I mean is the water has turned from dark green back to a cloudy color ( no longer green ). However, I lose 9 ppm from my SLAM level of 20 down to 11 every 12 hours.

    As you can imagine I've dumped 30 - 40 gallons of 8.25 bleach in thing over the last week.

    TA = 120
    PH = 7.2
    CYA = 50

    30' round / 21,300 gallon pool
    Sand filter, replaced sand in the spring

    Using zerobrite instead of DE to try to catch finer particulate.

    Guessing I just need to keep slamming the pool and wait for the FC to stabilize? All I'm trying to do is fix it so I can cover it for the winter.

    Thanks in advance for reading and any help.

  2. Back To Top    #2

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    pabeader's Avatar
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    Re: SLAM'ing for a week

    We really need some pics and you need to step up the testing and dosing frequency. Every minute you let it drop below shock level you are allowing the green meanie a chance to recover. Try for at least 4 times a day. More would be better.
    Bob - Palm Beach by San Juan Pools. approx 5000 gals., Pentair 320 cartridge filter (all new guts installed by me), Goldline SWG, 'New to me' Kreepy Krauly Sand Shark, Intermec 104 Timer Test kit: TF-100 w/Speed Stir

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    Re: SLAM'ing for a week

    Was doing it every hour during the waking hours for the first few days, then every four hours but sadly could only take so many days off work to deal with it. Will try to test and dose more frequently.

    Here are a few pics

    IMG_0253.jpg
    IMG_0254.jpg

    Sorry not sure why those are upside down, silly iPad.

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    Mod Squad kimkats's Avatar
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    Re: SLAM'ing for a week

    You are on the home stretch. Test and dose at least 4 times a day. Keep a VERY close eye on the filter. The filter is the one doing all of the work now!

    Keep brushing at least once a day to get the stuff up into the water so the filter can work.

    You can also put a skimmer sock on the basket to help the filter out.

    I would take the filter out and rinse it to see what it looks like.

    Put your brush in the water and take a pic a day of it. That will help you SEE it clear. Each day you should be able to see a little more of the pole. Your eyes will not see it but the pic will show it to you.

    Keep up the fight! You are almost done!

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    Re: SLAM'ing for a week

    Thanks pabeader and Kimkats. Will keep fighting the green monster.
    The pool listed in the sig was my old pool, this one has a sand filter, will inspect it as well.

    The old pool was a lot cheaper to SLAM when I got lazy!

  6. Back To Top    #6
    Mod Squad pooldv's Avatar
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    Re: SLAM'ing for a week

    Quote Originally Posted by booyaa View Post
    Sorry not sure why those are upside down, silly iPad.
    That is a free feature from apple.
    TFP Moderator
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Re: SLAM'ing for a week

    You said you are using a sand filter. If your sand filter has a backwash setting straight into the drain, definitely backwash often to clean the sand filter. This dramatically raises filter efficiency. You may need to top-off the pool with extra water everytime you backwash.

    Backwash sequence I use to clean my filter (but I'm 20,000 gallon)

    - Turn off pump (this prevents pipes doing a loud THUMP exiting regular filtering)
    - Set handle on sand filter to backwash
    - Open valve on the drain
    - Turn on pump
    - Wait for water window to become much clearer (but not too long -- you're not draining the pool!)
    - Set handle on nsald filter to rinse
    - Wait for water window to become a little clearer (fully clear if pool is 100% clear)(this prevents dirty water going back into pool).
    - Turn off pump (this prevents pipes doing a loud THUMP re-entering regular filtering)
    - Close valve to drain
    - Set handle on sand filter to filter
    - Turn on pump
    - DONE

    This varies from sand filter to sand filter, and only works if your backwash is connected to drain (sewer). You're briefly draining your pool while backwashing the filter to clean the filter.
    Became homeowners/poolowners in 2014 -- Now Resident Experts In Cheaply Hot-Tubbing (95F) A Large 20,000 Gallon Pool.
    20,000 gallon concrete/vinyl, 32'x16' size, Raypak Digital 266 Heater, Hayward Tristar VS pump

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    Re: SLAM'ing for a week

    Just a note: The people here at TFPC, recommend to only clean/backwash your filter when the pressure has risen 25% of the clean pressure. So keep that in mind.
    Bob - Palm Beach by San Juan Pools. approx 5000 gals., Pentair 320 cartridge filter (all new guts installed by me), Goldline SWG, 'New to me' Kreepy Krauly Sand Shark, Intermec 104 Timer Test kit: TF-100 w/Speed Stir

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