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Thread: newbie trying to get rid of algea

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    racerboy6996's Avatar
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    newbie trying to get rid of algea

    Before finding this forum I knew I had algae & I was told I needed to add CYA because what chlorine my SWG was producing was just being destroyed by the sun. Well I had found this forum but didnt realize how much I needed to read.

    My pool is in the sun at least 10hrs a day.

    Tuesday night I added about 4 cups of CYA (this is how much my friend told me to add)to a sock & hung it over the side of pool right in front of the return jet. Then I added 3 gallons of bleach. The CYA was dissolved by yesterday morning. I obviously still had algae. Not a lot but a couple small spots & one strip of algae on one of the wrinkles in the bottom of the pool.

    I have been brushing the pool every morning.

    Tonight my TF100 test kit showed up. Let me say anyone that questions the cost of this kit needs to see the size of this thing. It is definitely worth the money.

    Anyway my test results are as follows -
    FC 19.5
    CC 2
    TC 21.5
    PH 7.5
    T/A 60
    CYA 35
    Temp 80

    Since the pool is a SWG do I need to raise the CYA to 60 & then raise the FC to shock level (24 according to the chart)? Or since I just added the CYA a couple days ago do I need to wait a couple more days to see if the CYA needs more time to completely register?

    If I need to wait do I need to raise the FC to 24 and maintain it there until I know what the CYA really is?

    Also it looks like my T/A is a little low. Do I just let this go until I get the algae clear?

    I will check the levels of everything in the morning & see where they are.

    Thank you for your help.
    Intex 16ftx32ftx52in rectangular / Hayward 2 speed pump / Hayward 21in sand filter / Intex SWG / still saying solar panels coming next year

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    Richard320's Avatar
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    Re: newbie trying to get rid of algea

    You need to give that CYA at least a week to register fully on the test.

    Your pH is suspect, because the FC is so high. Ignore it, and TA, for now.

    Assume the CYA is up to the strength it should be, based on the amount you added. Pool Calculator can tell you what that should be, down near the bottom, where it says "Effects of Adding Chemicals." Be sure to enter the correct gallonage at the top.

    Then raise FC up to shock and keep it there. Crank up the SWG or add bleach, the source doesn't matter. Just get it up there and keep it up there by testing and replenishing often. This Pool School Article will help. This thread too.

    Once the shock process is through, worry about the rest.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    frustratedpoolmom's Avatar
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    Re: newbie trying to get rid of algea

    Bleach or the stronger pool store version is your best bet for shocking at this point - your SWG is not going to be able to produce it at the speed you need to reach shock level. Once there you can use the SWG to maintain shock level if you like. Just remember to turn the SWG off when you proceed with the overnight loss test.

    The rest of Richard's advice is spot-on!
    Helpful links: Pool School; CYA/Chlorine Chart
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    racerboy6996's Avatar
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    Re: newbie trying to get rid of algea

    thanks for the info.
    Algae was back when I woke up.
    This morning FC is 21, CC is 1. I used the pool calculator & added the amount of bleach it said to bring FC up to 24.
    Do I need to run my SWG longer than normal to keep it at shock level?
    Right now I have it running for 5hrs a day.
    Intex 16ftx32ftx52in rectangular / Hayward 2 speed pump / Hayward 21in sand filter / Intex SWG / still saying solar panels coming next year

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    Richard320's Avatar
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    Re: newbie trying to get rid of algea

    Quote Originally Posted by racerboy6996
    thanks for the info.
    Algae was back when I woke up.
    This morning FC is 21, CC is 1. I used the pool calculator & added the amount of bleach it said to bring FC up to 24.
    Do I need to run my SWG longer than normal to keep it at shock level?
    Right now I have it running for 5hrs a day.
    Test the FC again in an hour. If the level's holding, you're okay. If not, run the SWG more. Or just dump in some more bleach. SWG's aren't really made for shocking. The key is to kill the algae faster than it can reproduce. You have to keep the chlorine level above shock level the whole time. If it dips below, the algae can start growing again, and you've wasted all the chlorine you've added so far.

    Be sure to brush the pool to break up the film. Also, run anything that has water in it - booster pump, slide, whatever. There could be algae hiding in there. Any toys that go in the pool, vacuum head, brushes, toss them in too.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    racerboy6996's Avatar
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    Re: newbie trying to get rid of algea

    the FC has been holding for 2 days. CC is at .5
    I did the overnight test last night with no loss.
    I still show algae in the bottom. It is everywhere that I have a wrinkle & it was up against the sides of the pool brushes that I had laying in the bottom of the pool while shocking the pool.
    The water is very clear & nothing feels slimy. My liner actually squeeks whenever i run my finger on it.
    Is it possible that my pump just isnt getting all the junk out?
    The only vacuum that came with this pool is a "leaf vac". The kind that you put a garden hose on & it sucks the leaves up into a bag. I dont think the holes in the bags are small enough to collect dirt & ick..
    What should I do at this point?
    Intex 16ftx32ftx52in rectangular / Hayward 2 speed pump / Hayward 21in sand filter / Intex SWG / still saying solar panels coming next year

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    Richard320's Avatar
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    Re: newbie trying to get rid of algea

    Quote Originally Posted by racerboy6996
    the FC has been holding for 2 days. CC is at .5
    I did the overnight test last night with no loss.
    I still show algae in the bottom. It is everywhere that I have a wrinkle & it was up against the sides of the pool brushes that I had laying in the bottom of the pool while shocking the pool.
    The water is very clear & nothing feels slimy. My liner actually squeeks whenever i run my finger on it.
    Is it possible that my pump just isnt getting all the junk out?
    The only vacuum that came with this pool is a "leaf vac". The kind that you put a garden hose on & it sucks the leaves up into a bag. I dont think the holes in the bags are small enough to collect dirt & ick..
    What should I do at this point?
    Buy a better vacuum.

    And I'd keep the chlorine level up until all that stuff is gone. You do have the SWG off when doing the overnight test, right? Just checking.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Mod Squad zea3's Avatar
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    Re: newbie trying to get rid of algea

    Intex pumps and filters take longer to clean up a green pool. If you are using the cartridge filter then you will need a couple of spares that you can pop in while you are cleaning up the other one. You will need to rotate the filters every few hours until the algae is gone.
    TFP Moderator
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    racerboy6996's Avatar
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    Re: newbie trying to get rid of algea

    i just bought a better vacuum. I will start swapping out the filters every couple hours.
    Yes the SWG is off when I do the overnight test.

    The person we bought the pool from had not cleaned it for a couple days before he drained it & we picked it up.
    Not knowing any better we didnt really do any cleaning when we put it up other than wiping it out a little.

    I havent ever had any real slime or anything. This is another reason I was asking if this could just be left over "junk" not being filtered out. The water has always been clear.

    I appreciate all of the advice & I will start using the new vacuum as well as swapping out the filters in addition to brushing a couple times every day.
    Intex 16ftx32ftx52in rectangular / Hayward 2 speed pump / Hayward 21in sand filter / Intex SWG / still saying solar panels coming next year

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    racerboy6996's Avatar
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    Re: newbie trying to get rid of algea

    I have not had the SWG on since 7pm yesterday. The FC has only dropped 3 points since this morning & CC is still holding at .5
    I know I was told the CYA would not read accurate for at least a week but it has been holding steady at 40 for a couple days now.

    Off to vacuum. Thanks again for all the help
    Intex 16ftx32ftx52in rectangular / Hayward 2 speed pump / Hayward 21in sand filter / Intex SWG / still saying solar panels coming next year

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    racerboy6996's Avatar
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    Re: newbie trying to get rid of algea

    man this pump sucks for vacuuming..definite upgrade opportunity for next season
    Intex 16ftx32ftx52in rectangular / Hayward 2 speed pump / Hayward 21in sand filter / Intex SWG / still saying solar panels coming next year

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    racerboy6996's Avatar
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    Re: newbie trying to get rid of algea

    I dropped my pole into the pool. Since the FC is at shock level but CC is at .5, how bad would it be if I climbed into the pool? What would it do to my skin?
    Intex 16ftx32ftx52in rectangular / Hayward 2 speed pump / Hayward 21in sand filter / Intex SWG / still saying solar panels coming next year

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    Re: newbie trying to get rid of algea

    Quote Originally Posted by racerboy6996
    I dropped my pole into the pool. Since the FC is at shock level but CC is at .5, how bad would it be if I climbed into the pool? What would it do to my skin?
    It's okay to swim from minimum up to shock level based on your CYA.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

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    racerboy6996's Avatar
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    Re: newbie trying to get rid of algea

    thanks butterfly. I had read that but for some reason I dont feel confident in just what I am reading. I almost feel like I have to have the board members here validate my thoughts on it.

    I appreciate everyones help
    Intex 16ftx32ftx52in rectangular / Hayward 2 speed pump / Hayward 21in sand filter / Intex SWG / still saying solar panels coming next year

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    racerboy6996's Avatar
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    Re: newbie trying to get rid of algea

    Everything is great now thanks to everyone on this forum. The only issue I currently have is some sediment/dirt that I am having trouble getting vacuumed up thanks to the under powered pump. But other than that the pool water is very clear & the pool is literally squeaky clean.
    Intex 16ftx32ftx52in rectangular / Hayward 2 speed pump / Hayward 21in sand filter / Intex SWG / still saying solar panels coming next year

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    Butterfly's Avatar
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    Re: newbie trying to get rid of algea

    Thanks for the update. Squeaky clean sounds great
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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