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Thread: Went from green to cloudy and hasn't changed

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    Went from green to cloudy and hasn't changed

    Took a weeks vacation and left our crystal clear pool.

    Returned to find a jungle green swamp. My bust. I should have bumped up the chlorine more before we departed and had the neighbors pour some liquid cl.

    Commenced the SLAM process immediately after getting the covers off.

    Over three days the water rapidly went from jungle, to medium, to very light green. Back washed numerous times. Using DE to assist the sand filter, also. During that process we also gained visibility of all three steps with the top step being clear and the next two blurry.

    We maintained a SLAM level for a week before letting the chlorine drift down so we could check the PH.

    Three days ago the numbers were.

    PH 7.2
    FC 5.5
    Cc 0
    Cya 60

    We re SLAMmed the pool and it passes the OCLT.

    Today's numbers are

    FC 23.5
    Cc 0
    Cya 55

    Our problem is the water looks identical to day three after our alge bloom. What is causing our water to remain cloudy? I have spent a lot of time researching the forums and am only coming up with SLAM the pool. That would be fine if there were any progress being made. However, I don't see any change in the water clarity. And no Cc would seem to mean there is no alge being killed?

    Pump has been running in high 24/7.

    TF100 test kit.

    The pool store is pushing phosphates as the problem. I don't agree.

    Any suggestions? Please help us get our clear pool back.

    I have an ipad picture but can't figure out how to make it small enough to send.
    36000 gallon, in-ground, plaster, 1.5 hp - dual speed pump, 36" sand filter

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    Mod Squad jblizzle's Avatar
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    Re: Went from green to cloudy and hasn't changed

    If the cloudiness is not diminishing after a week, then clearly something is wrong with the filter. Have you inspected and deep cleaned the sand?
    my-sand-is-channeled-how-to-fix-it-t7626.html#p60821
    Jason, TFP Moderator
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  3. Back To Top    #3

    Re: Went from green to cloudy and hasn't changed

    I rebuilt the sand filter this spring. It was keeping the pool crystal clear prior to this bloom.
    36000 gallon, in-ground, plaster, 1.5 hp - dual speed pump, 36" sand filter

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    Re: Went from green to cloudy and hasn't changed

    Have you been backwashing during the bloom?
    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
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    Butterfly's Avatar
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    Re: Went from green to cloudy and hasn't changed

    Yes, recheck the filter. You should see at least some improvement daily.

    Maintain the SLAM process and do not let up until you pass all three tests. See red lines in my sig.
    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.

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  6. Back To Top    #6

    Re: Went from green to cloudy and hasn't changed

    Back to SLAMming.

    Yes, back washing about once a day.

    Is there anything that might assist us with expediting away the cloudiness.

    Thanks, kurt
    36000 gallon, in-ground, plaster, 1.5 hp - dual speed pump, 36" sand filter

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    Mod Squad jblizzle's Avatar
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    Re: Went from green to cloudy and hasn't changed

    Check the adding DE article in Pool School ... assuming you are passing the OCLT and have low CC.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Went from green to cloudy and hasn't changed

    Are you using pressure to indicate when to start the backwash or just rolling once a day?

    Thinking that the DE add method or back washing as soon as you see the pressure rise may be in order.


    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
    One cannot follow Islam and Christianity at the same time, nor can one follow pool store methods and TFP at the same time.
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    Mod Squad zea3's Avatar
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    Re: Went from green to cloudy and hasn't changed

    If you continue to pass the OCLT but the pool is still cloudy, try turning the pump off overnight and allow pool to sit undisturbed for about 12 hours. If the water clears and there is a lot of debris on the floor vacuum it out very slowly disturbing it a little as possible. If you find this to be the case then you have a lot of debris to filter out and sometimes it takes a while. Adding enough DE to cause a 1 pt rise in pressure helps to clear the water more quickly. Replace the DE after every backwash.
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    Re: Went from green to cloudy and hasn't changed

    I backwash about once a day - Based on a pressure increase. Replenish DE post backwash.

    We can now see the second step clearly (progress!). We'll keep the press on.
    36000 gallon, in-ground, plaster, 1.5 hp - dual speed pump, 36" sand filter

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    Re: Went from green to cloudy and hasn't changed

    You might be backwashing too often. You want to backwash when the pressure rises 20-25% of the clean pressure.
    John
    7 year old ~13,500 gal 24' AGP with 1.5 hp Proline pump, 150 sqft Pleatco cartridge, filled with well water with pH of about 4.5.
    Wanda the Whale pool vacuum, home made heater, Taylor K-2006
    Cloudy Pool? 1) Order test kit. 2) Follow SLAM
    New to TFPC? Read Pool School a few times, then post questions. PoolMath will help with chemical additions.

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    JasonLion's Avatar
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    Re: Went from green to cloudy and hasn't changed

    I'm with JohnN, you are probably backwashing too often. Sand filters won't catch the finer particles if you backwash frequently. Wait until the filter pressure goes up 25% from the starting pressure before backwashing.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    pwrstrk's Avatar
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    Re: Went from green to cloudy and hasn't changed

    Might not make sense but when sand filters are a little bit dirty they filter better.


    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: Went from green to cloudy and hasn't changed

    Almost there. Can just break out the main drain - 8 ft. Looking forward to finishing this and getting back to clear water. Thanks for all the help.
    36000 gallon, in-ground, plaster, 1.5 hp - dual speed pump, 36" sand filter

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    Re: Went from green to cloudy and hasn't changed

    You may want to consider adding some DE to your filter if you have passed the OCLT and have less than .5 ppm CC. It could help speed up this last little bit.
    John
    7 year old ~13,500 gal 24' AGP with 1.5 hp Proline pump, 150 sqft Pleatco cartridge, filled with well water with pH of about 4.5.
    Wanda the Whale pool vacuum, home made heater, Taylor K-2006
    Cloudy Pool? 1) Order test kit. 2) Follow SLAM
    New to TFPC? Read Pool School a few times, then post questions. PoolMath will help with chemical additions.

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