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Thread: Algecide

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    dsilchenstedt's Avatar
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    Algecide

    Is algaecide needed when closing the pool for the winter? I am following the how-to for above ground pools. It says to use algicide once pool is partially drained but others here said it is not needed, what do you think?
    Round Frame Pool 15' x 42" (app. 3800 gallons) converted to Krystal Clear 2800 GPH .75 HP (conversion thread Here all the links/info you will need are within), TF100 Test Kit with speed stirrer. My first SLAM

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    Richard320's Avatar
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    Re: Algecide

    It's up to you. Algaecides don't work well to kill algae, but they will help keep it from starting. The only thing you'll harm is your wallet. If I had a busy schedule and had to travel for work, I'd use it because there's no way to predict when the weather will change next spring and I would be afraid I wouldn't be home when it was time to open. The expense of the good stuff would be more than offset by the gallons of bleach I wouldn't have to buy to kill the bloom.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Mod Squad JVTrain's Avatar
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    Re: Algecide

    In your climate, I would suggest using it. Since your water is not likely to ever freeze and will be above 50 degrees? most of the winter, you'll always have some chlorine demand, some level of algae spores that will be trickling their way into your pool. It would be some good insurance.

    Would you even need to close in your area? Cover the pool, only circulate when there is a threat of freezing and check FC every week or so?
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    dsilchenstedt's Avatar
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    Re: Algecide

    I've had such a great first experience with owning my first pool! You guys really have a teachers heart, I've enjoyed being a part of this community.
    Round Frame Pool 15' x 42" (app. 3800 gallons) converted to Krystal Clear 2800 GPH .75 HP (conversion thread Here all the links/info you will need are within), TF100 Test Kit with speed stirrer. My first SLAM

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    dsilchenstedt's Avatar
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    Re: Algecide

    Quote Originally Posted by Richard320 View Post
    It's up to you. Algaecides don't work well to kill algae, but they will help keep it from starting. The only thing you'll harm is your wallet. If I had a busy schedule and had to travel for work, I'd use it because there's no way to predict when the weather will change next spring and I would be afraid I wouldn't be home when it was time to open. The expense of the good stuff would be more than offset by the gallons of bleach I wouldn't have to buy to kill the bloom.
    Thank you, the personal story helped me "get it" a little better.

    Quote Originally Posted by JVTrain View Post
    In your climate, I would suggest using it. Since your water is not likely to ever freeze and will be above 50 degrees? most of the winter, you'll always have some chlorine demand, some level of algae spores that will be trickling their way into your pool. It would be some good insurance.

    Would you even need to close in your area? Cover the pool, only circulate when there is a threat of freezing and check FC every week or so?
    we get light freezes 1 to 4 times a year, nothing major most years. I don't really know if I need to close, probably not but I also don't want to dump a bunch of money on chlorine all winter when it isn't being used.

    Maybe I should re-evaluate my winter plan. Maybe like you said just use a tarp (instead of a tarp does anyone have a recommendation for a good cover for my lil' pool) to cover it up and keep the uv's from breaking down the chlorine and cycle the pump once a week or when a freeze is expected. Would running the pump for a freeze keep the pump and gauge from messing up? I have the oil gauge that is sold on the TF-100 website.
    Round Frame Pool 15' x 42" (app. 3800 gallons) converted to Krystal Clear 2800 GPH .75 HP (conversion thread Here all the links/info you will need are within), TF100 Test Kit with speed stirrer. My first SLAM

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    Mod Squad JVTrain's Avatar
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    Re: Algecide

    What is the water temp now? Does it ever constantly stay below 60 degrees? Looks like your average daily temperature is below 60 for only December and January. Our closing recommendation is to close when the water is firmly below 60 degrees. Your pool may never be that...

    If you do close, I would strongly suggest using a cover and algaecide.

    If you partially close with no drain and circulate only to test and prevent freezes, I'd use a cover as well. Either way, you want to prevent chlorine losses and prevent algae growth to save yourself the headache of a spring swamp. If you partially close with a cover, it won't be very expensive to maintain FC, likely checking about every week and circulating to do so.

    Keep in mind, even though you might get a freezing temperature overnight or for a day or so, it will take quite some time for water to actually freeze solid and cause damage. The most vulnerable locations for freeze damage in your situation would be your plumbing lines and pump area. Wherever you have a lower volume of local water (narrow areas versus the pool itself).
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    dsilchenstedt's Avatar
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    Re: Algaecide

    Quote Originally Posted by JVTrain View Post
    What is the water temp now? Does it ever constantly stay below 60 degrees? Looks like your average daily temperature is below 60 for only December and January. Our closing recommendation is to close when the water is firmly below 60 degrees. Your pool may never be that...

    If you do close, I would strongly suggest using a cover and algaecide.

    If you partially close with no drain and circulate only to test and prevent freezes, I'd use a cover as well. Either way, you want to prevent chlorine losses and prevent algae growth to save yourself the headache of a spring swamp. If you partially close with a cover, it won't be very expensive to maintain FC, likely checking about every week and circulating to do so.

    Keep in mind, even though you might get a freezing temperature overnight or for a day or so, it will take quite some time for water to actually freeze solid and cause damage. The most vulnerable locations for freeze damage in your situation would be your plumbing lines and pump area. Wherever you have a lower volume of local water (narrow areas versus the pool itself).
    I think I will leave it as is but add a little algaecide and cover. once a week check chlorine and add a bit. if a light freeze is coming I will run pump, if a heavy freeze is coming I will take pump/tank/hoses inside (rarely occurs). so I guess I am choosing a partial close.
    Round Frame Pool 15' x 42" (app. 3800 gallons) converted to Krystal Clear 2800 GPH .75 HP (conversion thread Here all the links/info you will need are within), TF100 Test Kit with speed stirrer. My first SLAM

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