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Thread: Green Algae on tile under water and pool

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    Hurricane Gio's Avatar
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    Green Algae on tile under water and pool

    I found that I have some algae in the water. On the brought in-between the toes and the floor. My chlorine has been steady at 5.0 all winter and the water is balanced. PH around 7.5.

    reasons? Prevention? How to get rid of it?

    thanks
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    Re: Green Algae on tile under water and pool

    What is the full set of level?
    Most importantly, what is the CYA level? Could be the 5 ppm is not high enough.

    Probably time to start the shock process:
    pool-school/shocking_your_pool
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    Hurricane Gio's Avatar
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    Green Algae on tile under water and pool

    I will post my full numbers on Friday. Water is very clear. I am getting bleach to shock as well on Friday morning.

    Skip the algaecide stuff?
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    Mod Squad jblizzle's Avatar
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    Re: Green Algae on tile under water and pool

    Quote Originally Posted by Hurricane Gio
    Skip the algaecide stuff?
    Yes ... unless you want to spend more money ... and possible add undesirables into the pool like copper.

    Bleach is all you need to clear the pool of algae. May want to lower the pH a bit before shocking.
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    Re: Green Algae on tile under water and pool

    +1 on Jason's comments.

    We'll see your test numbers tomorrow
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    Hurricane Gio's Avatar
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    Re: Green Algae on tile under water and pool

    Here you go:
    FC: 3.0
    pH 8.0
    TA: 150
    CH: 285
    CYA: 30
    Salt: 3600

    So I assume I should get the pH and TA down today with acid and get my CYA up to 60.
    Then shock the pool at 24 until the algae get beat.

    I have not measured my Borates yet and will do on Sunday. Then add my ProTeam Supreme in.
    8,000 Gal, 11 x 26.8ft Shotcrete Pool with "Cool Blue" Diamond Brite by ESSIG Pools with Artistic Pavers Deck
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    Re: Green Algae on tile under water and pool

    pH first, then shock. You can deal with TA later
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    Re: Green Algae on tile under water and pool

    Quote Originally Posted by Melt In The Sun
    pH first, then shock. You can deal with TA later
    Thanks. Pool calculator say 13 for shock?
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    Re: Green Algae on tile under water and pool

    [quote=Hurricane Gio]
    Quote Originally Posted by "Melt In The Sun":3t8qczpl
    pH first, then shock. You can deal with TA later
    Thanks. Pool calculator say 13 for shock?[/quote:3t8qczpl]

    For a CYA of 30 ... FC 13ppm is the shock value to try to stay above.

    When all is dead and clear you can bump up the CYA level.
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    Re: Green Algae on tile under water and pool

    [quote=jblizzle]
    Quote Originally Posted by Hurricane Gio
    Quote Originally Posted by "Melt In The Sun":3ckkmrcq
    pH first, then shock. You can deal with TA later
    Thanks. Pool calculator say 13 for shock?
    For a CYA of 30 ... FC 13ppm is the shock value to try to stay above.

    When all is dead and clear you can bump up the CYA level.[/quote:3ckkmrcq]

    Ok. I just bought 5 large containers of bleach. Should I keep the CYA this low while socking? or bump it up ASAP?

    I will start tonight.
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    Re: Green Algae on tile under water and pool

    I think 30 should be fine for shocking. Then you do not need as high a FC level to shock. And starting at night actually would allow the FC to only deal with the algae since the sun will not be out burning it off. Would not hurt to try to start when you can today and check the level a couple times before you go to bed and then check again first thing in the morning.

    Just make sure you lower your pH before you start shocking because the measurement is off with FC >10.

    When you go back to normal SWG maintenance you will want to raise the CYA.
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    Re: Green Algae on tile under water and pool

    Quote Originally Posted by jblizzle
    I think 30 should be fine for shocking. Then you do not need as high a FC level to shock. And starting at night actually would allow the FC to only deal with the algae since the sun will not be out burning it off. Would not hurt to try to start when you can today and check the level a couple times before you go to bed and then check again first thing in the morning.

    Just make sure you lower your pH before you start shocking because the measurement is off with FC >10.

    When you go back to normal SWG maintenance you will want to raise the CYA.
    Thanks jason. I added the acid about an hour or go. I will some bleach now.
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    Re: Green Algae on tile under water and pool

    Check the pH now to be sure you are where you want to be. After you start adding bleach, you want to keep testing it and adding to keep it above 13. Otherwise you may be using more bleach than you would normally have too.

    Run your pump 24/7 and watch your filter pressure.

    Did you turn off your SWG? You can leave it on to help maintain the shock level, but remember to turn it off when you do the overnight loss test ... there have been a few times I have read where people we surprised that the FC went up over night
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    Re: Green Algae on tile under water and pool

    Quote Originally Posted by jblizzle
    Check the pH now to be sure you are where you want to be. After you start adding bleach, you want to keep testing it and adding to keep it above 13. Otherwise you may be using more bleach than you would normally have too.

    Run your pump 24/7 and watch your filter pressure.

    Did you turn off your SWG? You can leave it on to help maintain the shock level, but remember to turn it off when you do the overnight loss test ... there have been a few times I have read where people we surprised that the FC went up over night
    SWG is on. I rather keep it on, so I don't forget to put it back on. I id that once last year, LOL!
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    Re: Green Algae on tile under water and pool

    For prevention in the future, you might check your circulation in the area of the algae as it may be poor. Perhaps pointing the return in that area somewhat downward might help. I'm assuming it's not pollen.
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    Re: Green Algae on tile under water and pool

    Quote Originally Posted by chem geek
    For prevention in the future, you might check your circulation in the area of the algae as it may be poor. Perhaps pointing the return in that area somewhat downward might help. I'm assuming it's not pollen.
    Thanks. yes, its on the stairs mainly, which are reccessed.
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    Re: Green Algae on tile under water and pool

    I now have like white bubbles/foam on top of the water. Too much bleach in the water?
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    Re: Green Algae on tile under water and pool

    Have you added any algaecide? They can cause foaming. Shocking will take care of it.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
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    Green Algae on tile under water and pool

    Quote Originally Posted by Butterfly
    Have you added any algaecide? They can cause foaming. Shocking will take care of it.
    Nope, just shocking. FC is up to 18 and no CC(?). When I added the r-005 it stayed clear. Foaming is gone already.

    How many days can it take for a very small outbreak?

    Borates about 15 right now as well.
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    Re: Green Algae on tile under water and pool

    Quote Originally Posted by Hurricane Gio
    Quote Originally Posted by Butterfly
    Have you added any algaecide? They can cause foaming. Shocking will take care of it.
    Nope, just shocking. FC is up to 18 and no CC(?). When I added the r-005 it stayed clear. Foaming is gone already.

    How many days can it take for a very small outbreak?

    Borates about 15 right now as well.
    How long? Well, as long as it takes! but, probably not long. Where are you in the shocking process? Have you done an OCLT yet? Remember to turn off the SWG when you do.

    Once you complete the shock process (see red line in my sig) you can add your CYA.

    Then, you can start knocking the TA down (per Pool School) before you add the borates.

    How does the pool look? Can we see a pic?
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
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