Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: Cloudy ONLY when pump is running

  1. Back To Top    #1

    Join Date
    Jun 2012
    Location
    Ellicott City, MD
    Posts
    8

    Cloudy ONLY when pump is running

    FC=1.5
    CC=0
    TA=80
    pH=7.2
    CYA=40

    We had spent a fortune on pool chemicals earlier this spring to try to clear up our (algae first), then cloudy water. Finally drained about 80% of the pool and scrubbed, scrubbed, scrubbed, vacuumed to waste. Filled with new water, but when the pump was running, we couldn't see below the second rung because of the cloudiness. We always run our brand new pump 24/7, and have checked our filter quite a few times. It never seems to get dirty (beginning to worry me). Have been using the BBB method for a couple weeks now -- yayy!! -- and brought our chemistry under control... but still cloudiness. We had parties all weekend, kids nonstop in the pool, so we turned pump off because of all the splashing water/waves - and lo and behold, perfectly clear water - you could see a pin at the bottom. I was thrilled, but told my hubby I hoped it didn't cloud up again when we turned the pump on. Sure enough, it has. This is such a mystery to us... What could make perfectly clear water when still become very cloudy when moving through the pump/filtration system? We have a cartridge filter, so it is not like a previous time when we had a sand filter with a crack in it. BTW, I know I have to tighten up those numbers above but we simply haven't added our chlorine since the parties. Thanks!!
    10,000 Above Ground Vinyl Liner, 1 HP Hayward Power-Flo Matrix, Pentair Clean and Clear Cartridge Filter (50 gph)

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Cloudy ONLY when pump is running

    How long does it take the cloudiness to clear up when you turn off the pump? If it is rather quick, under an hour, then the cloudiness is probably caused by small bubbles in the water that are somehow being injected by the pump. That would happen in rare cases with a SWG, or more commonly if you have an air leak on the suction side of the plumbing that is drawing air into the system. Two common places for an air leak are the pump strainer basket lid and the water level in the skimmer being too low, allowing air to be drawn in by a vortex.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,085

    Re: Cloudy ONLY when pump is running

    I know I have to tighten up those numbers above but we simply haven't added our chlorine since the parties.
    That's a bad practice. Chlorine is the lifeblood of a clear, clean pool.....get your fC up where it needs to be.

    What indicators do you look for to tell you it's time to clean the filter? What is the psi on the filter now...pump running, of course.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  4. Back To Top    #4
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,347

    Re: Cloudy ONLY when pump is running

    What's your CH and how did you test for it?

    Since you've let your FC get so low I'd run an OCLT.
    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

  5. Back To Top    #5
    toadlife's Avatar
    Join Date
    May 2009
    Location
    Lemoore, CA
    Posts
    57

    Re: Cloudy ONLY when pump is running

    Quote Originally Posted by hrfox
    We always run our brand new pump 24/7, and have checked our filter quite a few times. It never seems to get dirty (beginning to worry me).
    You don't have one of those multiport valves set on "recirculate" do you?
    21,000 Gallon IG Plaster with Spillover Spa (Built in 1978) | 48 sq/ft Hayward DE Filter | 3.0 HP Pentair Variable Speed Pump | Hayward H250FDN Heater| 8 Gallon Liquidator | Taylor K-2005 | Taylor FAS-DPD Chlorine Test | Taylor "SpeedStir"

  6. Back To Top    #6

    In the Industry
    Qwaxalot's Avatar
    Join Date
    Jun 2012
    Posts
    439

    Re: Cloudy ONLY when pump is running

    There wouldn't be a multiport valve on a cartridge filter. I would suspect air bubbles (as mentioned above) or an incorrectly assembled filter (allowing the water to bypass the filter).
    In the industry, CSP (Certified Service Professional) by the NSPI and it's successor the APSP. My company services over 600 pools every year. I think the practices regularly espoused on this forum (especially the BBB method) are outstanding; however my comments will be often oriented towards the goal of getting it done, and getting it done right now!

  7. Back To Top    #7

    Join Date
    Jun 2012
    Location
    Ellicott City, MD
    Posts
    8

    Re: Cloudy ONLY when pump is running

    Thank you all so much for your responses. I am sorry, I was away this past week on vacation and didn't take my computer with me. I will investigate all your suggestions.
    10,000 Above Ground Vinyl Liner, 1 HP Hayward Power-Flo Matrix, Pentair Clean and Clear Cartridge Filter (50 gph)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •