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Thread: Can't get the water clear

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    Can't get the water clear

    I am struggling with an algae problem since we opened our pool this weekend. The chemicals are in balance, we have been shocking the heck out of the pool and scrubbing, vacuuming, cleaning the filter frequently, etc. Our CYA is only 40, PH is 7.4 and chlorine level is well over 5+ (It is probably more like 10-15). However, the water is STILL green. What is our next step? The pool stores aren't offering much in terms of advice. I just read about Phosphate Remover. Our phosphate level was 3. Would PhosFree or something similar be good to add to the shocking combination?
    24' 13,500K Gal AGP, Vinyl, 2 HP Dual Speed Baquapure Pump, Hayward S180T 150 lbs Sand Filter

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    frustratedpoolmom's Avatar
    Join Date
    May 2007
    SWSuburban Chicago, IL

    Re: Can't get the water clear

    Welcome to TFP.

    Are these pool store test results?

    Phosphate levels are really irrelevant provided you maintain proper chlorine levels.

    Can you post your equipment/specs in your signature, like mine. Go to User Control Panel, the Profile, then Edit Signature. Filter, pool type, etc.

    Have you been running the filter 24/7? Have you read Pool School, specifically Defeating Algae and How to Shock Your Pool?

    What kind of products have you been using to sanitize the pool?
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    Perfectly Clear Pool Service, Find me on Facebook!

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Can't get the water clear

    Welcome to TFP!

    Phosphate remover is a waste of time and money.

    What your really need is good test results. Saying that FC is 5+ isn't good enough. To reliably kill algae you need to keep the FC level around 15, given your CYA level, by testing frequently and raising the FC level as needed.

    I strongly recommend getting a top quality test kit. The best choice is a kit from TF Test Kits, see the link in my signature. The Taylor K-2006 is also good.

    See Defeating Algae in Pool School for more information about how to deal with algae.
    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

  4. Back To Top    #4
    Ohm_Boy's Avatar
    Join Date
    May 2007
    Orlando, FL

    Re: Can't get the water clear

    If your CYA is 40 and you have algae, you should be shocking your pool with an FC level of 16 or better, and keeping it there until you have no overnight FC drop.
    FC levels that high are tough to measure without a good FAS-DPD test kit, so it'll be tough to be accurate, so having a TF100 or Taylor K2006 would be recommended.

    You need to reach and maintain that shock level until all the algae is dead or it will not go away.
    [center:1kpalu48]Helpful Links: Pool School | CYA/Chlorine Chart | Pool Calculator[/center:1kpalu48]

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