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Thread: DO I have Mustard?

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    Makdaddy's Avatar
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    DO I have Mustard?

    Good day
    Last year at the end of the season I was fighting algae that looked like brown streaks . almost like dirt.
    Got it done and closed the pool
    Open the pool , Nice clear water and my levels
    Ph 6.8
    FC 12
    CYA 64
    CC 1 OH OH

    So like 3 hours after the pool is open I see around the edges a little brown coming back. ****
    So I Slam to FC 25
    I added for Walmart PH stabalizer to bring up the PH , but didnt do that till after I slamed so I know the readings will be off If I tried to get one.

    So we check the FC 2 times yesterday and last eve and it was @ 25
    Checked it this morning and its @ 29 (I have my SWG running 12 hours. Plus I added a floater of Chlorine tablets) (So Im not sure how it went up that much?)
    CC was .05 Better

    I am just wondering if this is mustard algae and I need to shock higher level? Going to brush it all down this morning also
    --- Greg----
    24 x 54 Round Cozumel AGP with Grand Entrance Step 14500 Gal
    Running ntex Krystal Clear Saltwater System with E.C.O.
    A/G Cristal Flo II Sand Filter Tank w/ 2HP, 2-Speed Dynamo pump -Zeobest
    TFT Test Kit---Gorilla Floor and Foam Pool Cove--Half Deck

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    JasonLion's Avatar
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    Re: DO I have Mustard?

    There is no way to be sure. Personally, I'd treat it as normal algae this time, and if it comes right back then treat it as mustard algae next time.
    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

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    Mod Squad woodyp's Avatar
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    Re: DO I have Mustard?

    Are these streaks only located on the shady areas of the pool?
    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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    Makdaddy's Avatar
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    Re: DO I have Mustard?

    Quote Originally Posted by JasonLion View Post
    There is no way to be sure. Personally, I'd treat it as normal algae this time, and if it comes right back then treat it as mustard algae next time.
    Will do this round, But seems odd that it came back with a FC of 12 when I opened


    Quote Originally Posted by woodyp View Post
    Are these streaks only located on the shady areas of the pool?
    Not really they will go out to the middle pf the pool as well. But I will take note before I vacuum today

    OK it seems to be everywhere in the middle along the sides.
    I am vacuuming now and will continue slam process
    If it comes back I will slam at Mustard levels and see what happens

    Algea.jpg
    Attached Images Attached Images
    Last edited by Makdaddy; 05-26-2014 at 02:25 PM. Reason: add pic
    --- Greg----
    24 x 54 Round Cozumel AGP with Grand Entrance Step 14500 Gal
    Running ntex Krystal Clear Saltwater System with E.C.O.
    A/G Cristal Flo II Sand Filter Tank w/ 2HP, 2-Speed Dynamo pump -Zeobest
    TFT Test Kit---Gorilla Floor and Foam Pool Cove--Half Deck

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    Makdaddy's Avatar
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    Re: DO I have Mustard?

    OK
    So FC was 27.5 last eve with CC at .05, today CC is almost zero, when we add the 5 drops it barely changes color.and FC is at 25
    No return of Algea, Pool is clear
    I slowed the pump to 1/2 horse (Low) will let run thru Friday 24hrs, still running the SWG for 18 Hrs, will lower after CC gets to zero
    Will check FC and CC tomorrow nite hope to get it to zero.
    --- Greg----
    24 x 54 Round Cozumel AGP with Grand Entrance Step 14500 Gal
    Running ntex Krystal Clear Saltwater System with E.C.O.
    A/G Cristal Flo II Sand Filter Tank w/ 2HP, 2-Speed Dynamo pump -Zeobest
    TFT Test Kit---Gorilla Floor and Foam Pool Cove--Half Deck

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    Re: DO I have Mustard?

    .5 cc's test result is treated the same as if you have 0 cc's.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Makdaddy's Avatar
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    Re: DO I have Mustard?

    Quote Originally Posted by duraleigh View Post
    .5 cc's test result is treated the same as if you have 0 cc's.
    good to know
    pools still clear this morning. Im keeping my fingers crossed
    --- Greg----
    24 x 54 Round Cozumel AGP with Grand Entrance Step 14500 Gal
    Running ntex Krystal Clear Saltwater System with E.C.O.
    A/G Cristal Flo II Sand Filter Tank w/ 2HP, 2-Speed Dynamo pump -Zeobest
    TFT Test Kit---Gorilla Floor and Foam Pool Cove--Half Deck

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    Re: DO I have Mustard?

    Quote Originally Posted by woodyp View Post
    Are these streaks only located on the shady areas of the pool?
    What would this indicate please?
    Thanks,
    Cardano
    20k IG PebbleTec w/ STA-RITE PE5E-182L 1HP and Zodiac Polaris PB4 for Polaris 380 vacuum / Hayward ProGrid DE4820 Filter / TF-100 but I havent broken down and gotten a speed stir yet

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    Makdaddy's Avatar
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    Re: DO I have Mustard?

    Cardano
    I think Mustard algae will grow more in the shaded areas

    So this morning I see a little bit coming back. a spot here and there.
    FC was 22 and the CC was down to zero last eve.
    can the algae creep back in with the CC down?
    Should I start the slam at 44 for mustard algae? Or bring it back up to 25 for another day or two?
    its been over three days at FC 22 to 25
    --- Greg----
    24 x 54 Round Cozumel AGP with Grand Entrance Step 14500 Gal
    Running ntex Krystal Clear Saltwater System with E.C.O.
    A/G Cristal Flo II Sand Filter Tank w/ 2HP, 2-Speed Dynamo pump -Zeobest
    TFT Test Kit---Gorilla Floor and Foam Pool Cove--Half Deck

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    Makdaddy's Avatar
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    Re: DO I have Mustard?

    Wow Do I feel like an ***
    So
    With all said and done we got the stairs in the pool and examined the brown streaks
    Turns out to be sand or the zeobest from the filter
    My son validated that it just went poof when he got close to it, underwater. he couldnt really collect any of it
    Reviewing all of the circumstances it seems to make since.
    No collection on the walls, vacuumed up easy, seems to appear when pump is on low vs high. Water was always crystal clear. it never felt slimy.
    So Im relieved, going to let the Fc stabilize to normal levels.
    Im not sure why my CC was at 1.0 when I started ?
    and I will need to look at the laterals on the filter this fall.
    --- Greg----
    24 x 54 Round Cozumel AGP with Grand Entrance Step 14500 Gal
    Running ntex Krystal Clear Saltwater System with E.C.O.
    A/G Cristal Flo II Sand Filter Tank w/ 2HP, 2-Speed Dynamo pump -Zeobest
    TFT Test Kit---Gorilla Floor and Foam Pool Cove--Half Deck

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