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Thread: Cloudy Water and Mustard Algae

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    Join Date
    Nov 2013
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    Camarillo, CA
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    Cloudy Water and Mustard Algae

    After a several partial drains I went from a cya of 240 to about 50 now. Last week I noticed cloudy water and mustard algae on the sides. I had left the solar covers on for a couple of weeks (the 5' round ones from Leslie's) and did have leaves and such on the bottom when it started to go bad. Several inches of rain water last weekend. Had been running the FC at about 6. I brushed and vacuumed. What I did next may be backwards. Instead of going to SLAM levels (about 20 for me), I went to Yel/Mstrd. Shock levels of 32 for the last few days. Not seeing any algae today and the water is still cloudy but I can easily see the bottom drain. Constant filtering with clean cartridges. Should I continue at FC=32 or let it come down to Shock level=20 and go through a SLAM at the lower level? Using 8.25 bleach. Last night at midnight FC was 32 and this morning was 30.
    FC=30
    CC=0
    TA=100
    CH=450
    PH=didn't test at this high FC level - was 7.5
    CYA=50
    Thanks
    In-ground plaster 14000 gal., Sta-Rite System 3 cartridge filter 300sq. ft., Pentair Intelliflow VS pump, 8 panel solar heating system, Sun Touch controller, TF-100 test kit, Ecojet Plus robotic pool cleaner.

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    duraleigh's Avatar
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    Re: Cloudy Water and Mustard Algae

    Let FC drift back to 20 or so and continue the SLAM until your pool is clear. You did no harm by boosting it up but no higher than that (32), please
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Patrick_B's Avatar
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    Re: Cloudy Water and Mustard Algae

    None at all, you're good to go letting it come down. Just hold course there until you clear up.
    TFP Moderator
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    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

  4. Back To Top    #4

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    Nov 2013
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    Camarillo, CA
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    Re: Cloudy Water and Mustard Algae

    Things look very good. Water is crystal clear. No algae. Almost no OCLT. FC slowly drifting back down. Going to cut back on 24/7 filtering. Water temp. is 79 degrees. It took a while but it worked. Going swimming this w/e.
    FC 14.5
    CC 0
    PH 7.5
    TA 90
    CH 450
    CYA 50

    Thanks, now I know how to handle an outbreak
    In-ground plaster 14000 gal., Sta-Rite System 3 cartridge filter 300sq. ft., Pentair Intelliflow VS pump, 8 panel solar heating system, Sun Touch controller, TF-100 test kit, Ecojet Plus robotic pool cleaner.

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    Patrick_B's Avatar
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    Re: Cloudy Water and Mustard Algae

    Excellent! Congrats on getting a handle on it.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

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    Mod Squad woodyp's Avatar
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    Re: Cloudy Water and Mustard Algae

    Most of us would kill for a water temp of 79 about now!
    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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  7. Back To Top    #7

    Join Date
    Nov 2013
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    Camarillo, CA
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    Re: Cloudy Water and Mustard Algae

    The solar panels and solar rings are a great combination! Rings are a bit of a hastle to take in and out though, all 16 of them!
    In-ground plaster 14000 gal., Sta-Rite System 3 cartridge filter 300sq. ft., Pentair Intelliflow VS pump, 8 panel solar heating system, Sun Touch controller, TF-100 test kit, Ecojet Plus robotic pool cleaner.

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