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Thread: Yellow Mustard and/or Pollen

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    Join Date
    Jun 2013
    Location
    NE Florida
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    Yellow Mustard and/or Pollen

    Yellow Mustard and/or Pollen

    I have owned this house/pool for almost 4 years. The pool has a large ornamental bush/tree that provides privacy and aesthetics that extends over the pool. For 2-4 weeks each year (around May) the pollen and seed pods from this tree are bad enough to cause me to run the pump 24/7 and clean the cartridge filter daily. We had a mild winter here in NE Florida so this year the pollen drop started early (in March) and was not as intense as years past. A second pollen drop started in late May, again not intense, but enough to yellow the water. Besides running the pump and frequent cleanout of the traps/filter, I have previously had luck clearing up the pool with a product called Natural Chemistry's Pool First Aid. I treated the pool and it cleared up for a few days but became cloudy again. A second treatment cleared the pool up for a few days and then the cloudiness returned. A 3rd treatment had no impact. Like I mentioned, I have experienced the pollen drop enough to know that 24/7 filtering, frequent filter rinses and occasionally using this first aid stuff has worked well for 4 years, thus after the 3rd regiment I started to research other possibilities.

    Speculating that I may have Yellow Mustard, I began to shock the pool using ‘lots’ of liquid chlorine in 2.5 gallon jugs.

    After stumbling onto this forum, I quickly surmised that the test kit I had was too basic to determine CYA and higher levels of Chlorine. Yesterday, I picked up what I thought was the Leslie’s FAS-DPD only to find out it was an expensive DPD (only) kit which maxed out at 25ppm for chlorine. I am heading back to Leslie’s at lunch to see if they will swap the kit for the FAS-DPD. I don’t think they have it in stock, so may have to order one.

    For the past 5 days, I have been brushing the pool twice daily, cleaning the cartridge filter twice daily, and added socks to the skimmer baskets. The pool is improving and no longer yellow/green but it is still cloudy, though I can easily see the drain cover in the deep end (my test for cloudiness).

    I have read enough to know that I really need to have accurate chem readings to help determine next steps. As soon as I get the right kit, I’ll be able to effectively manage the shock levels , but wanted to type up a summary while I had an opportunity. Thanks for a great forum, I have learned a lot from reading the many posts.

    Reading taken with DPD kit after shocking:
    FC 25+
    TC 25+
    CYA 85

    Reading before shocking and with older basic chem set:
    pH 7.2
    FC 3.0

    21,000 gallons in ground, kidney shape
    Polaris 280
    Cartridge filter

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    Mod Squad Bama Rambler's Avatar
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    Jun 2009
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    Re: Yellow Mustard and/or Pollen

    Welcome to TFP.

    Did you test for CH? If not you probably should.
    In fact go ahead and post a full set of test results.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Join Date
    Jun 2013
    Location
    NE Florida
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    Re: Yellow Mustard and/or Pollen

    FAC = 4
    CH = 210
    CYA = 70 (MY test for CYA was around 85, but that was my first attempt at it)
    TA = 90
    pH = 7.2
    Phosphates = 100
    this test was performed by pool store prior to shocking.

    Update - Just left the pool store and was able to return kit and refill a few chlorine jugs. I'll be ordering a comprehensive kit momentarily.

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    duraleigh's Avatar
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    Re: Yellow Mustard and/or Pollen

    Welcome to the forum. I think you are on the right track. You can get that last bit of cloudiness out but it's a bit of a guessing game until you get your kit.

    Based on your description, I would add about one gallon of Clorox each day until you FAS/DPD kit gets in and you can really tune in your FC levels and finish up to a crystal clear pool.

    All your other actions seem to be just about right.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad Bama Rambler's Avatar
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    Re: Yellow Mustard and/or Pollen

    With a CYA about 85 (I trust your number more) your FC is too low. You need to raise it soon.

    That may be what's contributing to the cloudiness.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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