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Thread: Crystal Clear...until now! Help!

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    Crystal Clear...until now! Help!

    After a week of cool weather pulled the solar cover off 20' AG and saw a "dirt" ring around the outer edge on the bottom of pool. Tried to vacuum it up but it was too fine. Chemicals all tested within good ranges that day. After a couple of days of the kids playing and stirring up the water now the entire pool looks green and there is a light brown dust on the bottom everywhere.

    I backwashed the sand filter thinking because the pressure gauge was slightly in the yellow range. Lots of brown water came out. Ran the filter again that night, water is the same color and the dust/dirt is still there.

    Tested again today:

    CYA 40
    PH 7.3
    FC 5.5
    TA 180
    CH 210

    Not sure what to do now or exactly what this stuff is. We had rain a couple of times over that cool week so I was thinking it was just fine dirt/pollen but now the whole pool looks green. The lowest my FC has gotten since discovering the "dust" has been 1.5 and I bumped it back up to 4/5 right away.

    Help please!!
    8.5K gal, AG, Krystal Clear Sand 14" model #SF15110; flow rate 1600 gal/hr, June 2013

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    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    East Texas

    Re: Crystal Clear...until now! Help!

    Looks like "Something Wicked This Way Comes" decided to come your way. You should follow the SLAM process outlined in pool school and raise your FC and KEEP it there per the chlorine/cya chart there.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
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    Donldson's Avatar
    Join Date
    Jun 2009
    NW Ohio

    Re: Crystal Clear...until now! Help!

    Did you test your CC level? If you left the cover on for a week that may have been on the high side.
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
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    Re: Crystal Clear...until now! Help!

    I was wondering about shocking so we will do that. Unfortunately we won't be swimming at our BBQ tomorrow with friends.

    The CC was .5 at first and it's zero now.
    8.5K gal, AG, Krystal Clear Sand 14" model #SF15110; flow rate 1600 gal/hr, June 2013

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