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Thread: Algae or Leaf stained water ?

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    Algae or Leaf stained water ?

    Hi - 2nd question as a new pool owner in the chicago area.
    Pool is a 16-32 steel frame inground unit.
    The pool was closed 3rd week of septermber due to issues with pool mechanics to be fixed in the spring. It was shocked prior to final winterizing. The pool was covered using a meyco mesh system. We have two large Oak trees in yard which is another reason why the pool was closed early. The previous owner advised doing this to prevent removing leaves with a shovel from the pool. Anyways leaves did pile up on the cover (about a foot thick) and we had a lot of rain in between my opportunities to remove them from the cover.

    I did my final yardwork this weekend and uncovered the pool to remove what leaves might have blown under the cover. Once the cover was off the top four inches of pool water was a brownish color, like coffee. Once I started moving water around with the nets to remove the surprisingly few leaves in the pool, all of this material settled to the bottom and the water seemed pretty clear.

    Was this algae that formed over the six -eight weeks of no chorine or filtration or did I make tea in my pool from all the oak leaves? I am thinking it is leaf tea that the pump will filter out in the spring, but looking for others in the midwest to confirm
    Thanks !
    16 X 32 wooden frame with aluminum braces in ground pool. 3.6ft shallow end, 8.5ft deep end. 22,000 gallons. Pool constructed in 1976 in Chicago area. Mechanics: 1HP hayward super pump, Jaccuzi sand filter, Hayward SWG, and Raypak 2100 heater. No main drain (capped years ago) 3 jets, 1 skimmer. Liner replaced May 2013.

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Algae or Leaf stained water ?

    It might be a combination of both but most likely you made some leaf tea.

    Regardless, the cure is the same....SLAM the pool when you open in Spring and the chlorine and SLAM process will take care of it all.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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