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Thread: Newbie with green pool and want to close

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    Sep 2009
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    Newbie with green pool and want to close

    Hi Guys,
    My aunt does not have internet access, so I'm trying to help her with a problem. Since we discovered this site a few months ago and converted from bacquagoo to the bbb method, we've been very pleased and no problems !!! So, my aunt has had a green pool since Labor Day, (can't see the bottom) has used only the pool store methods and they didn't even give her test results, just tested her water and told her what she needed to purchase to add, which she did until just totally frustrated and no clear pool. I ordered the TFtest kit for her and, here are her specs:

    15,000 gal above ground round pool with vinyl liner, sand filter (the pool is deeper in the center)

    FC=0
    CC=0
    PH=7.5
    TA=130
    CYA=30

    So according to the pool calculator and cya/chlorine chart, she should shock to 12 FC by adding 366 oz of 6% bleach. Then keep until < 1% drop in FC overnight with CC<= 0.5. Do I have that correct?

    Thanks so much for any help suggestions, you guys were great when we converted and I just know she will have the same great results.

    Debbie
    13,500 gal AG, cartridge filter, 2 sp Waterway pump. TF-100 Test Kit (Love it !!) Repeating Pool School.....learn something new everyday !

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
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    Re: Newbie with green pool and want to close

    Yes, you have it correct. I get 400 oz to get 15000 gallons to an FC of 13 from zero. A little over 3 gallons. Don't be afraid to buy lots of bleach. You'll be surprised at how much you'll need.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    duraleigh's Avatar
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    Re: Newbie with green pool and want to close

    Remind her to replenish the chlorine back up to shock level very often....2-3 times daily in the first few days is not too much....then she can taper off a little but still must keep the FC level at shock value or a little higher.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Butterfly's Avatar
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    Re: Newbie with green pool and want to close

    ....and keep an eye on the filter PSI and backwash as needed
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

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  5. Back To Top    #5

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    Re: Newbie with green pool and want to close

    Thanks so much for the feedback, especially the 2-3 times/day top off, I'd forgotten that part. She can vacuum to waste and will do so tomorrow. Her FC is up to 6.5, adding more bleach and will check again tonight before turning in and back at it tomorrow.
    13,500 gal AG, cartridge filter, 2 sp Waterway pump. TF-100 Test Kit (Love it !!) Repeating Pool School.....learn something new everyday !

  6. Back To Top    #6

    Join Date
    Sep 2009
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    Alabama
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    Re: Newbie with green pool and want to close

    Update,
    The pool is BLUE not green today
    It has been getting a little better each day since Monday and today is only Thursday !. It's holding at FC=12 overnight with CC=.5 but dropping during the day to around 9. She's been adding bleach as needed to bring back to 12-13, testing again at night and first thing in the mornings. The water is still a little cloudy, but she was able to see enough to vacuum instead of doing so blindly, so we're hoping for clear water in the next couple of days. Question: Since she is ready to close the pool for the winter, and the closing instructions in pool school recommend bringing to shock level for 24 hrs prior to closing, once the water becomes clear, is it ready to close? Also, closing instructions mention addition of a polyquat algaecide as optional. Since she just spent many $ and a whole bottle of this stuff with no results recently, I'd like to hear your thoughts on using/not using the algaecide.

    Last question, when she vacuumed, she turned the filter to drain, but when she turned it back after, stuff went back into the pool. The pool is 3 years old and just this summer the pool store told here about vacuuming using the drain setting, this happened once this summer. Any insight? We have a cartridge filter so I'm not familiar with this.

    Thanks so much for the support, my Aunt Linda has become a fan of TFP
    13,500 gal AG, cartridge filter, 2 sp Waterway pump. TF-100 Test Kit (Love it !!) Repeating Pool School.....learn something new everyday !

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