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Thread: Cloudy Water

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    Join Date
    Jul 2015
    Location
    Ontario
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    5

    Cloudy Water

    Hello, I have adopted an in-ground pool as a result of a new home purchase last year. Previous summer the pool was sparkling and clean and I used granular chlorine, buffer ,and Oxibrite (non chlorine shock) the entire season. No issues. Their was no heater on the pool, we live in Toronto, Canada.

    This year we added a heater and the season started out great! 83 degrees and everyone is happy. The past week the water has gotten cloudy and I notice a fine brown sediment at the bottom of the pool on a daily basis. We have recently had a warm spell with temperatures reaching about 90 during the day. I have still been using the granular chlorine and Oxibrite. Went to local pool store and they recommended a clarifier which didn't do much when added for one day. I had my water tested:
    pH: 7.5
    FC: 3.6
    Tot Chl: 5.3
    Adj. Total Alk: 82
    Calcium 141
    CYA: 106

    After reading a few articles I realize the CYA is very high, however the pool store print out says acceptable range is 30-200!

    I have now added a 5 L jug of liquid chlorine and another 1 KG of the shock. I have also started to drain a few inches off the top while adding fresh water to the pool.

    Any ideas for a newby?
    16' x 32' with small L shallow end of 12' x 12' in-ground pool. 34,000 Gallons.

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    Join Date
    Jul 2015
    Location
    Gilroy/CA
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    21

    Re: Cloudy Water

    I'll answer because it looks like no one else is.

    #1 Go to pool school (link upper right corner of site) and ditch the pool store.

    #2 You need to confirm the CYA number and other numbers by testing it yourself with your own TF100 or Taylor K2006 test kit. CYA ppm determines the amount of chlorine you need in the water to properly sanitize your pool and to get rid of the algae in there. To reduce the CYA requires that you replace the water with fresh water. You will only want to perform this in one shot for obvious reasons. From the number you have posted your looking at a minimum 50% drain of the pool. From the number you posted (106) you will need to dilute the sample water in order to read the CYA concentration as the test maxes out at 100ppm.

    http://www.troublefreepool.com/conte...art-slam-shock

    Pool Math: Set it up with the correct chemicals and concentrations you are using and your pool size. Input target value for FC based on the CYA/Chlorine chart.

    http://www.troublefreepool.com/conte...ool-calculator

    SLAM process for defeating algae: Follow it to a tee.

    http://www.troublefreepool.com/conte...tain-shockingl


    Ditch the shock and just stick with liquid chlorine. What filter do you have?

    I think that should keep you busy.
    16000 Gallon Plaster pool, Tagleus 2 TA100 Sand Filter filled with Zeobrite media, 3/4 HP Sta-Rite pump, Dolphin Deluxe 4 Robot, BBB method, Taylor K2006 Test kit. Nothing to brag about here. Lifelong Student of Life. "If you know everything, you fail to learn anything." --not sure who said that--

  3. Back To Top    #3
    Piolin's Avatar
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    Sep 2010
    Location
    Miami, FL
    Posts
    604

    Re: Cloudy Water

    Good post I will add to not put any stuff from the pool store, just bleach like great value from Wal-Mart, the regular one, one galón every night until you can post results from one of the recommended kits
    8,400 gal Intex, 3K GPH pump, 16" sand filter, SWG CG-28669, TF100 test kit, speed stir, K-1766 Taylor salt test.

    The corner stone of TFP
    Pool School - Chlorine / CYA Chart

  4. Back To Top    #4

    Join Date
    Jul 2015
    Location
    Ontario
    Posts
    5

    Re: Cloudy Water

    SO I have purchased a Taylor 2600 kit and I dumped and replaced half my water. My readings are now as follows:
    FC: 7.5
    CYA: 60
    PH: 7.8
    Alkalinity: 110
    Calcium: 250

    The pool is noticeably clearer already. I am going to SLAM it to remove the still cloudy water.

    I have a sand filter, Hayward Pro Series Filter. 1 HP Hayward pump.

    I have noticed the pressure on the filter is higher even after backwashing. It used to be around 12 and is now around 16. Is this a possible issue?
    16' x 32' with small L shallow end of 12' x 12' in-ground pool. 34,000 Gallons.

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    duraleigh's Avatar
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    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,083

    Re: Cloudy Water

    It may be a really good time to open that filter and inspect and deep clean the sand. There is an article in pool School to help you do that.

    I don't have any other advice for the pressure increase. Have you added any restrictions to the pressure side? eyeballs, etc?

    Your numbers look very good to start the SLAM and you seem to have a good grasp of what to do. Almost everyone fails to keep the chlorine high enough long enough. If you remember that, your pool will be crystal clear.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  6. Back To Top    #6

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    Jul 2015
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    Ontario
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    Re: Cloudy Water

    So SLAM is going quite nicely with noticeable improvement each day. I have maintained the FC above 25 for the majority of time and am now losing about 3 FC overnight. I have started heater up again and wanted to ask a few questions before I set my self back.
    1: I have left solar blanket off the entire time. If I add it back on will it set me back due to possible algae on cover? If so I may take the cover out and give it a good wash.
    2: Once I pass the three rules and let the FC start to drift back down what level should it be before I can let swimmers in? It is supposed to be a great weekend and I might have trouble convincing a 4 year old why he can't use his now clear blue pool!

    - - - Updated - - -

    Just another note, So glad to have stumbled across TFP. With this support system I will enjoy years of sparkling blue swimming!
    16' x 32' with small L shallow end of 12' x 12' in-ground pool. 34,000 Gallons.

  7. Back To Top    #7

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    PAGirl's Avatar
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    Jun 2012
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    Central PA
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    2,388

    Re: Cloudy Water

    If you are below SLAM level for your CYA and you can see the bottom of the pool clearly (for safety reasons) it is okay to swim!
    26' X 52" Intex Ultra Frame. Intex Sand Filter
    26' X 52 Intex Ultra Frame Install
    You can lead a horse to (clear) water, but you can't force him to swim in it!

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    lefty51's Avatar
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    May 2015
    Location
    East of Royals country western MO
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    451

    Re: Cloudy Water

    Hi adopted owner,

    I noticed you didn't post your CC (combined chlorine) number. If your losing 3 FC overnight, that an indication that your FC is still attacking algae and/or eliminating CC.

    Your solar blanket could have algae (I would suggest thoroughly cleaning it), but the best reason for leaving it off during the day is allow sunlight to help get rid of CC

    Once you have truly passed your OCLT, it is safe to swim at levels below your recommended SLAM levels.
    And as PAGirl pointed out, you can clearly see the bottom of the pool and anything (anyone) in there
    Si -central Mo. 32' x 16' -- 3'4" to 6' deep Vinyl liner - 16,500 Gals : Triton II filter -Duraglass 2 hp pump - 1 speed : SI-30 salt generator
    TF-100 with speedstir

  9. Back To Top    #9

    Join Date
    Jul 2015
    Location
    Ontario
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    5

    Re: Cloudy Water

    So pool is super clear and CC equals FC. OCLT was passed and level drifting back to normal...cue Murphy's law. I left for a business trip and my wife just let me know the pool pump died. I am returning on Thursday. Any ideas what she can do to maintain pool clarity until I get back to deal with it? I don't want to add anything extra to her plate while I am gone by having her search out pool pump repairs, etc.
    16' x 32' with small L shallow end of 12' x 12' in-ground pool. 34,000 Gallons.

  10. Back To Top    #10
    poolnoob.ca's Avatar
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    May 2014
    Location
    Georgetown, ON, Canada
    Posts
    277

    Re: Cloudy Water

    For now, since your chlorine generator will not be working, add enough liquid chlorine daily to target of 7ppm (since your cya is 60) and try to circulate the water afterwards with the pool brush or pole skimmer, especially at the bottom as the liquid chlorine is heavier than water
    32,000L Fibreglass Leisure Pools IG 12.5'x23'x5' Pump: AstralPools BX1 1.0HP
    Filter: AstralPools ZX-310 SWCG: AstralPools VX7T
    Heater: Hayward H250FDN Test Kit: TF-100

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