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Thread: Partial drain and refill

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    Partial drain and refill

    This is my first post but this forum has helped me tremendously already. I have been fighting a green pool the past 2 weeks trying to get it back right. I am almost there but i have a couple of questions. My salt cell went bad and was showing 1600ppm so i added the salt to bring it back up. I had vacuumed to waste so i figured it was low. Well after 24 hours it was showing 1500ppm after the salt was added. so i ordered a new cell and some salt strips and sure enough my salt level is 5000ppm. My question is the pool is still cloudy (i can see the bottom of shallow end) should I wait until it is clear or go ahead and start draining? My CH is very high at 470, would this cause the cloudy water? Here are my numbers (taken with tf100)

    FC - 25
    CC - .5
    TA - 80
    PH - 7.2
    CH - 470
    CY - 70

    We have a party on Aug. 11 so I need to get it ready by then. Thanks a lot in advance for your help
    20,000 gal., pentair clean and clear cartridge 420 flow rate 150gpm, IG, black pebble, .75hp pentair whisperflo, built in 80s replastered in 2009, hayward aquarite SWG with Ti3 titanium cell

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    Richard320's Avatar
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    Re: Partial drain and refill

    How'd you get those readings?

    If you have a FAS-DPD chlorine test (The powder) then I would recommend shutting off the SWG tonight and performing an OCLT. Then you'll know if it's clouding due to algae or just not filtering well.

    I don't have a SWG myself, so I don't know if super high salt is a problem or not.
    Calcium will not cause that cloudiness. I'm well above that and my pool is clear
    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.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Partial drain and refill

    I used the tf100 test kit it is fas/dpd. The SWG is turned off it will not generate over 3600ppm, so i am going to have to partially drain regardless of CH. I have been adding a lot of bleach to keep the FC up to kill the algae.
    20,000 gal., pentair clean and clear cartridge 420 flow rate 150gpm, IG, black pebble, .75hp pentair whisperflo, built in 80s replastered in 2009, hayward aquarite SWG with Ti3 titanium cell

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    Richard320's Avatar
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    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
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    Re: Partial drain and refill

    Well then you might as well drain now and get the salt level down. That will also make a lower FC possible for the shock process. No point spending money on bleach only to pump it all out in a day. Once salt level is down and it's refilled, start the shock process, and as soon as you pass the 3 tests, raisethe CYA and fire off the SWG.

    I see no problem having it ready in a week.
    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.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Partial drain and refill

    Thanks for the quick help!
    20,000 gal., pentair clean and clear cartridge 420 flow rate 150gpm, IG, black pebble, .75hp pentair whisperflo, built in 80s replastered in 2009, hayward aquarite SWG with Ti3 titanium cell

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