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Thread: Had some mustard algae

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    Had some mustard algae

    I had a little MA on my pool wall the other day, about a 4ft x 3ft area.I brushed it off and checked my chems.

    FC 1.0
    PH 7.8
    TA 70
    CH 220
    CYA 40
    Salt 3200

    I cleaned my filter and adjusted my SWG.Today I get..

    FC 4.0
    PH 7.4
    TA 80
    CH 220
    CYA 60.
    Salt 3200

    No algae today and brushed walls again.
    My question is should I shock to FC 24 according to pool calculator?
    I was going to use the cal-hypo to cheat in getting some CH out of it?
    Also going to bring CH up to 300 and CYA to 70

    Thank You TFP
    10,500 gal Gunite,Imperial White River Rok,1.5hp Pentair Whisperflo,320sqft Clean & Clear,Intellichlor 40 SWG,EasyTouch w/Remote,Pentair Pool Shark Sweep(suction side),Jandy AE2000 Heat Pump & 8mil Solar Blanket,SAM Light,18in Caribean Shelf,6 & 4 ft Benches

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    TizMe's Avatar
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    Re: Had some mustard algae

    There is a thread on water balance for SWG's

    My suggestion is if you think/suspect you have algae ....... treat it! Your CYA is on the lower end scale for your type of pool but i suggest leaving it there until you get rid of the algae because you can use less chlorine for shocking.
    Les
    Don't have a pool right now. Just sharing what I have learned over the years!
    Helpful Links:
    Pool School,Pool Calculator,Cl/CYA Shock Chart,TF Test Kit
    Doing BBB and loving it!

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    Re: Had some mustard algae

    the poolcalcultor says shock to 18 and 34 to MA.
    So I shock to 34?
    10,500 gal Gunite,Imperial White River Rok,1.5hp Pentair Whisperflo,320sqft Clean & Clear,Intellichlor 40 SWG,EasyTouch w/Remote,Pentair Pool Shark Sweep(suction side),Jandy AE2000 Heat Pump & 8mil Solar Blanket,SAM Light,18in Caribean Shelf,6 & 4 ft Benches

  4. Back To Top    #4
    TizMe's Avatar
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    Re: Had some mustard algae

    If its mustard algae then for your CYA you should shock to 24. Refer to this chart for your levels.
    Les
    Don't have a pool right now. Just sharing what I have learned over the years!
    Helpful Links:
    Pool School,Pool Calculator,Cl/CYA Shock Chart,TF Test Kit
    Doing BBB and loving it!

  5. Back To Top    #5

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    Re: Had some mustard algae

    Thank you but to late.I went off the Pool Calulator suggested 34 for MA shock.The Taylor book says 30.So with what I added I should be around 32.So I have read the shock sticky.I am not sure I follow it.I had MA but 0 CC.So do I just shock and wait for FC to come back down before swimming?I will test in an hour or so and have the suggested test kit.
    10,500 gal Gunite,Imperial White River Rok,1.5hp Pentair Whisperflo,320sqft Clean & Clear,Intellichlor 40 SWG,EasyTouch w/Remote,Pentair Pool Shark Sweep(suction side),Jandy AE2000 Heat Pump & 8mil Solar Blanket,SAM Light,18in Caribean Shelf,6 & 4 ft Benches

  6. Back To Top    #6
    frustratedpoolmom's Avatar
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    Re: Had some mustard algae

    Quote Originally Posted by raiderchuck
    Thank you but to late.I went off the Pool Calulator suggested 34 for MA shock.The Taylor book says 30.So with what I added I should be around 32.So I have read the shock sticky.I am not sure I follow it.I had MA but 0 CC.So do I just shock and wait for FC to come back down before swimming?I will test in an hour or so and have the suggested test kit.
    It's okay to go with the 30-34, IMHO, here's the CYA chart that I like to refer to as it gives the "Yellow and Mustard Algae" targets - and hold it there for 48 hours, because Mustard Algae is resistant to chlorine, also once your FC holds overnight, run at the Yellow/MA minimum target...for a week or so, be sure it's not coming back. If this is something that happens frequently, consider running at the higher minimum target of 9-10 most of the time...to prevent it from returning.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  7. Back To Top    #7

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    Re: Had some mustard algae

    First I really appreciate the immediate responses as I walk through this.I have added 5.5 jugs of 96oz 6% bleach.It is one hour later and I get

    8.0 PH
    20 FC
    .5 CC
    Does anyone need more numbers? Do I adjust the PH now?
    I will check again later.48 hrs?One week seems excessive.My pool has been crystal clear to this point of the MA showing up.If I go to 32FC can I just circulate 24hrs?
    I will follow what is recommended.Thank you in advance.
    10,500 gal Gunite,Imperial White River Rok,1.5hp Pentair Whisperflo,320sqft Clean & Clear,Intellichlor 40 SWG,EasyTouch w/Remote,Pentair Pool Shark Sweep(suction side),Jandy AE2000 Heat Pump & 8mil Solar Blanket,SAM Light,18in Caribean Shelf,6 & 4 ft Benches

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    TizMe's Avatar
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    Re: Had some mustard algae

    You wont get an accurate reading for your PH while shocking your pool. So I would wait until your algae is under control since your PH before you shocked was just a little high. Shock levels must be maintained for several days

    You need to keep shocking your pool until you meet the following criteria:
    a) Your FC loss is 1ppm or less overnight
    b) Your CC level is 0 -0.5 during your FC test
    c) Your water is clear.

    Dont forget to brush your pool and clean your filter while getting rid of the algae.

    This is going to take time and patience!
    Les
    Don't have a pool right now. Just sharing what I have learned over the years!
    Helpful Links:
    Pool School,Pool Calculator,Cl/CYA Shock Chart,TF Test Kit
    Doing BBB and loving it!

  9. Back To Top    #9

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    Re: Had some mustard algae

    My ph was 7.4 before I started and 8.0 after.I believe it went up because I pointed a return to the surface when adding chloring to mix.I went in the house and left it aerating my pool.oops.Knowing that would you still not adjust?
    Thankx
    10,500 gal Gunite,Imperial White River Rok,1.5hp Pentair Whisperflo,320sqft Clean & Clear,Intellichlor 40 SWG,EasyTouch w/Remote,Pentair Pool Shark Sweep(suction side),Jandy AE2000 Heat Pump & 8mil Solar Blanket,SAM Light,18in Caribean Shelf,6 & 4 ft Benches

  10. Back To Top    #10
    TizMe's Avatar
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    Re: Had some mustard algae

    No, If it were me I would leave it now because as I said with shocking your pool now your going to get false readings for your PH and maybe get yourself really messed up.
    Les
    Don't have a pool right now. Just sharing what I have learned over the years!
    Helpful Links:
    Pool School,Pool Calculator,Cl/CYA Shock Chart,TF Test Kit
    Doing BBB and loving it!

  11. Back To Top    #11
    frustratedpoolmom's Avatar
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    Re: Had some mustard algae

    It's from the chlorine....it will drop back down when the chlorine returns to "normal" levels. PH rise from aeration wouldn't happen that fast from just a return being pointed up. Don't adjust it. Retest when your FC is below 10.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  12. Back To Top    #12

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    Re: Had some mustard algae

    I never asked but do I leave my pump running overnight?I am going to test my water at 8pm tonight and then in the morning before work.If it does not drop 1ppm in FC am I good?
    10,500 gal Gunite,Imperial White River Rok,1.5hp Pentair Whisperflo,320sqft Clean & Clear,Intellichlor 40 SWG,EasyTouch w/Remote,Pentair Pool Shark Sweep(suction side),Jandy AE2000 Heat Pump & 8mil Solar Blanket,SAM Light,18in Caribean Shelf,6 & 4 ft Benches

  13. Back To Top    #13
    TizMe's Avatar
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    Re: Had some mustard algae

    Yes your pump needs to be running 24/7 while your getting rid of the algae.

    You need to keep shocking your pool until you meet the following criteria:
    a) Your FC loss is 1ppm or less overnight
    b) Your CC level is 0 -0.5 during your FC test
    c) Your water is clear.

    Dont forget to brush your pool and clean your filter while getting rid of the algae.

    This is going to take time and patience!
    Les
    Don't have a pool right now. Just sharing what I have learned over the years!
    Helpful Links:
    Pool School,Pool Calculator,Cl/CYA Shock Chart,TF Test Kit
    Doing BBB and loving it!

  14. Back To Top    #14

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    Re: Had some mustard algae

    Thank you for your patience with me.I really do appreciate it.I have all the trust in TFP and none in my store.Everything here just makes sense.
    10,500 gal Gunite,Imperial White River Rok,1.5hp Pentair Whisperflo,320sqft Clean & Clear,Intellichlor 40 SWG,EasyTouch w/Remote,Pentair Pool Shark Sweep(suction side),Jandy AE2000 Heat Pump & 8mil Solar Blanket,SAM Light,18in Caribean Shelf,6 & 4 ft Benches

  15. Back To Top    #15

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    Re: Had some mustard algae

    I am now at FC24 will check again in the morning, CC is 0.
    Hope it holds.
    10,500 gal Gunite,Imperial White River Rok,1.5hp Pentair Whisperflo,320sqft Clean & Clear,Intellichlor 40 SWG,EasyTouch w/Remote,Pentair Pool Shark Sweep(suction side),Jandy AE2000 Heat Pump & 8mil Solar Blanket,SAM Light,18in Caribean Shelf,6 & 4 ft Benches

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