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Thread: Opening Pool w/new SWG Numbers Help

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    Opening Pool w/new SWG Numbers Help

    Opening pool I want to adjust numbers before we turn on the SWG
    Here's my first numbers

    FC 0
    PH 7.0
    TA 100
    CH 80
    CYA 0
    Salt 300

    Start with the CYA to bring up to 70-80 and add some bleach? Then what do I do with the TA and PH? I know I can then add the salt before I turn on the SWG. I think the most important thing first is CYA and FC levels????
    I've have a new Pool Pilot Digital Complete System RC-40 cell.

    Thanks for the help.
    16X32 Rectangular In Ground Built 1998, New Vinyl liner and Motor 8/2012, 19,000, Hayward Sand Filter, Hayward Super Pump,PoolPilot DIG-220 SWG, 2 Skimmers, Main Drain, Clean Machine Robot, Full Sun, Bleach, TFTest Kit
    Central, VA

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    Re: Opening Pool w/new SWG Numbers Help

    Get FC up with bleach, add salt to get to your SWG's preferred numbers. Don't start SWG until a day after adding salt. Get CYA up to the 70-80 range or your SWG won't keep up. I would not mess with the pH because your SWG is going to drive it up in a hurry. Once you get everything balanced, you are probably going to have pH drift, if so you'll work on getting TA down, but that comes later.
    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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    linen's Avatar
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    Re: Opening Pool w/new SWG Numbers Help

    Are you certain about your cya level being 0...what was it when you closed?

    Are you sure your salt measurement 300? That is a little low, even if you did not have the swg last year, unless this is a new pool? If you did have the swg last year, then it is unlikely it is that low (unless your replaced 90% of your water).
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: Opening Pool w/new SWG Numbers Help

    Do I get the FC up to 3-5 for the SWG? Add the stabilizer to a sock hang in front of the return where the water comes out is that correct?

    In August of last year we had new liner. CYA was low when I closed last year I never really got it up very high after the new fill. I measured it at 0 and so did the pool store.
    16X32 Rectangular In Ground Built 1998, New Vinyl liner and Motor 8/2012, 19,000, Hayward Sand Filter, Hayward Super Pump,PoolPilot DIG-220 SWG, 2 Skimmers, Main Drain, Clean Machine Robot, Full Sun, Bleach, TFTest Kit
    Central, VA

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    Re: Opening Pool w/new SWG Numbers Help

    How did you measure CYA? Not that we don't believe you, just want to know how so we can see the whole picture.

    Yes, 3-5. I shoot for 5 on mine, that way when it drifts down while the pump isn't running, it won't get dangerously low.
    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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    linen's Avatar
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    Re: Opening Pool w/new SWG Numbers Help

    Quote Originally Posted by koliver13
    n August of last year we had new liner. CYA was low when I closed last year I never really got it up very high after the new fill.
    Okay, that makes sense now. And this is a new swg installation?

    Quote Originally Posted by koliver13
    Do I get the FC up to 3-5 for the SWG?
    For the first couple of days while the cya is dissolving, attempt to keep FC 1-3 ppm. Once your cya is dissolved, then start following the recommendations for your target cya level. When you get the salt dissolved, then you can start maintaining the recommended swg FC level (for either 0 cya before being dissolved or for your target cya level once it is dissolved).
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: Opening Pool w/new SWG Numbers Help

    Thanks Linen, I should have been more clear. I made an assumption that he meant FC of 3-5 once everything was done.

    So, follow Linen's advice during startup.
    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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    Re: Opening Pool w/new SWG Numbers Help

    Thank you
    16X32 Rectangular In Ground Built 1998, New Vinyl liner and Motor 8/2012, 19,000, Hayward Sand Filter, Hayward Super Pump,PoolPilot DIG-220 SWG, 2 Skimmers, Main Drain, Clean Machine Robot, Full Sun, Bleach, TFTest Kit
    Central, VA

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    Re: Opening Pool w/new SWG Numbers Help

    One more question. When i took the cover off my plastic top two steps have some green stuff would this be algae? I would guess I need to shock my numbers are low CYA and FC shocking would be easy at this point correct?
    16X32 Rectangular In Ground Built 1998, New Vinyl liner and Motor 8/2012, 19,000, Hayward Sand Filter, Hayward Super Pump,PoolPilot DIG-220 SWG, 2 Skimmers, Main Drain, Clean Machine Robot, Full Sun, Bleach, TFTest Kit
    Central, VA

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    linen's Avatar
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    Re: Opening Pool w/new SWG Numbers Help

    It sounds like algae, Normally I would say to shock it. But since your opening and the algae appears to be only on the steps, I would start with the chlorine at 3 ppm tonight and see how it looks in the morning.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: Opening Pool w/new SWG Numbers Help

    FC Last Night 6.0
    CC 0
    PH 7.2
    TA 120
    CH 70-80
    CYA 50-60?
    Salt 2400
    Temp72

    Have Pool Pilot DIG-220. New Start up. How are my numbers? Have added CYA 48 hrs ago. Might rise a little. Have the salt system up and running. Says to add 75lb of salt?? Also the installer has not set up relay switch or timer. I've been turning off pump/SWG at night running 12hrs. Don't know what % to set SWG at??? Any help would be great??
    16X32 Rectangular In Ground Built 1998, New Vinyl liner and Motor 8/2012, 19,000, Hayward Sand Filter, Hayward Super Pump,PoolPilot DIG-220 SWG, 2 Skimmers, Main Drain, Clean Machine Robot, Full Sun, Bleach, TFTest Kit
    Central, VA

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    Re: Opening Pool w/new SWG Numbers Help

    I would go ahead and add the salt today if you can, and leave the SWG off until tomorrow. You have enough chlorine in the water and you shouldn't go below the recommended level. Do you know if the SWG was setup for your 23,000 gallons? I'm getting 115lbs. of salt to raise the level to 3000 ppm. I would say it is safe for now to only add 75lbs of salt.

    After you get the salt level correct, run the SWG for a couple more days to see what happens with the FC. You can lower the FC by running the pump fewer hours and/or reducing the % output on the SWG.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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    Re: Opening Pool w/new SWG Numbers Help

    I need to change the water to 19,000 after filling last year it's closer to this. What % should the SWG be set at?
    16X32 Rectangular In Ground Built 1998, New Vinyl liner and Motor 8/2012, 19,000, Hayward Sand Filter, Hayward Super Pump,PoolPilot DIG-220 SWG, 2 Skimmers, Main Drain, Clean Machine Robot, Full Sun, Bleach, TFTest Kit
    Central, VA

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    Re: Opening Pool w/new SWG Numbers Help

    It was set for 19,000.
    16X32 Rectangular In Ground Built 1998, New Vinyl liner and Motor 8/2012, 19,000, Hayward Sand Filter, Hayward Super Pump,PoolPilot DIG-220 SWG, 2 Skimmers, Main Drain, Clean Machine Robot, Full Sun, Bleach, TFTest Kit
    Central, VA

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    Re: Opening Pool w/new SWG Numbers Help

    Go ahead and add the salt.

    When you first start the SWG it's a good idea to start off at 50% and if you are getting too much FC you can lower the % some and/or reduce the pump run time. If you are not making enough FC then increase the %. Each pool will have its own settings due to many factors; temp, swim load, amount of sun, etc...

    If your electrical rates are high, then I suggest running the SWG on a higher % output and reducing the pump time. I'm in a high electrical rate area, So Cal, and I get away with an 8 hour run time that keeps the pool clean and my output is set at 70%. My pool gets full sun, it's 88 degrees, and the swim load tends to get up there for a smaller pool.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

  16. Back To Top    #16

    Re: Opening Pool w/new SWG Numbers Help

    Ok I'll add the salt when I turn it back on. Thanks for the help.
    16X32 Rectangular In Ground Built 1998, New Vinyl liner and Motor 8/2012, 19,000, Hayward Sand Filter, Hayward Super Pump,PoolPilot DIG-220 SWG, 2 Skimmers, Main Drain, Clean Machine Robot, Full Sun, Bleach, TFTest Kit
    Central, VA

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