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Thread: Algae Nearly Gone After Being Closed for 2 Years.

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    Algae Nearly Gone After Being Closed for 2 Years.

    Hi All, Newbie Here..

    So I just closed on a home and had the vinyl in ground pool opened up after 2 years on non use. Fortunately it had a pool cover on it so there wasn't much debris aside from algae. We had a pool guy come in and shock with 8lbs of powdered chlorine on 2 occasions and had the pumps running 24/7. After a nice scrubbing of the walls and few back washes and a vacuum, the pool was nice and clear...4 days later, there I checked the pool and saw very some light spots of algae on the floor and walls ..(wasn't able to be at the property but the pumps were running). Went to Leslie's and threw 2 bags of shock Saturday evening and then applied 12 caps of pool first aid the morning after since I was told it's a 24,000 gal pool.. Cleared up a bit by Sunday evening so I was thinking I do the same Monday evening with the pool first aid and go from there. I'm hoping it will be all gone so I can then continue the upkeep with the chlorine tablets and floaters I also purchased! Am I on the right track? Thanks all!
    15,000 Gal In Ground Pool Vinyl Liner DE Filter

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    Patrick_B's Avatar
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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    Welcome to the Forum!

    Sorry to say, but no, not by the methodology we teach here. We are about knowledge first, doing our own testing, and dosing the pool only with what is needed. Most of us do not trust or rely on Pool Stores or services for anything chemical that a pool needs.

    I suggest first taking a look at the ABC's of Pool Chemistry. From there in Pool School I would check out Defeating Algae, SLAM, and all else you can absorb. If you are willing to learn some basics, do some of your own Daily testing and understanding what it all means then you can do this yourself easily. Part of this means getting your own proper test kit. If this sounds like something you'll be willing to do, let us know, and we are here to help.

    Enjoy the forum!
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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    Welcome to the forum. All the stuff Brushpup is talking about is linked in the pretty colors of his signature.
    IG gunite/plaster pool/spa Started 1/17/14, Plastered 5/16/14
    Size: 12'-21'x39' free form, depth ranging from 4' to 7, attached 6 person spa with spillover.
    Equipment: Whisperflo 2hp pump, Pentair 30" sand filter, Pentair Mastertemp 400k BTU heater, 1hp Whisperflo for waterfalls, and a blower for spa floor

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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    You're on the right track from this day forward. You've sought the good advise that is offered here. The rest is up to you. Do as Brushpup said, read as as much as you can, and you'll be returning those chlorine tablets and floaters you bought soon enough. Good luck and welcome.
    19.5k gal, 16x32 vinyl liner, sand filter, 1hp single speed pump, K-2006 test kit.

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    Richard320's Avatar
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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    It sounds like you may have won a few battles, but you still haven't won the war. Algae is sort of like yeast, if any is left to grow, it will, and it will grow exponentially. It's not that the algae is back; it never left.

    Pucks and floaters don't just add chlorine; they also add stabilizer. So do most "shock" powders. And while the chlorine goes away, the stabilizer stays behind, which means the chlorine levels needed to ensure you have some active chlorine left over to fight algae goes up. So you add more pucks, which raises the CYA (stabilizer) level again. And while the chlorine goes away, the stabilizer stays behind, which means the chlorine levels needed to ensure you have some active chlorine left over to fight algae goes up. So you add more pucks, which raises the CYA level again. And while the chlorine goes away, the stabilizer stays behind, which means the chlorine levels needed to ensure you have some active chlorine left over to fight algae goes up. So you add more pucks, which raises the CYA level again.... You're trapped in a vicious spiral that will end with a green cloudy pool, an empty wallet, and a pool store recommendation to drain the pool due to high Total Dissolved Solids. And then you get right back on that merry go round unless you adopt a new strategy.

    Spend some time in Pool School.
    http://www.troublefreepool.com/conte...ater-chemistry
    http://www.troublefreepool.com/conte...at-is-tfpc-bbb
    http://www.troublefreepool.com/conte...-abbreviations
    http://www.troublefreepool.com/conte...nate-your-pool
    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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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    I did purchase a kit and am going to test the water this evening... Def gonna read up on these basics. and have a better understanding of what these readings recommend. Thanks!
    15,000 Gal In Ground Pool Vinyl Liner DE Filter

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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    Quote Originally Posted by ChuckBeez View Post
    I did purchase a kit and am going to test the water this evening... Def gonna read up on these basics. and have a better understanding of what these readings recommend. Thanks!
    What kit did you buy?
    IG gunite/plaster pool/spa Started 1/17/14, Plastered 5/16/14
    Size: 12'-21'x39' free form, depth ranging from 4' to 7, attached 6 person spa with spillover.
    Equipment: Whisperflo 2hp pump, Pentair 30" sand filter, Pentair Mastertemp 400k BTU heater, 1hp Whisperflo for waterfalls, and a blower for spa floor

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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    The Taylor Technologies K-1000 - OTO Basic Test Kit
    15,000 Gal In Ground Pool Vinyl Liner DE Filter

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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    That is only part of the much larger test kit you will need to follow our methods. You want either a TF100 or a Taylor 2006.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    I just did some research on the kits and basically the 1000 only tests for Bromine, Chlorine & pH. Gonna return it for the full K2006. Would it be bad if I didn't add anything to the pool for a day or so till I test the water? Would more algae build up? Like Richard320 said, and from what I read, adding more shock and starting to add floaters is only gonna raise the cya and make a bigger issue.
    15,000 Gal In Ground Pool Vinyl Liner DE Filter

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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    It's best not to add unless you have a good idea of what it needs. As for the kit, ordering the TF100 is a far better value for your dollar. Same Taylor reagents, more of them in the parameters you'll test for often. The link is in my sig line as well.
    TFP Moderator
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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    so my kit finally arrived and i'm going to test the waters... will post some numbers later today. yesterday the pool was mostly clear aside from some small specks of algae here and there. i currently have a floater in there with some tablets and have the pump on an 8hr day timer.
    15,000 Gal In Ground Pool Vinyl Liner DE Filter

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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    hi guys so i tested the waters and i have

    FC - O
    CYA- 0
    PH- 7.6
    TA-140
    CH-160

    no surprise some algae started forming again... there is zero chlorine in there
    15,000 Gal In Ground Pool Vinyl Liner DE Filter

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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    any thoughts on how i can raise that cya? from my reading so far i'm going to have to have cya in there for the chlorine to stay in. should i do that sock method or just buy a few bags of the powdered shock?
    15,000 Gal In Ground Pool Vinyl Liner DE Filter

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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    Quote Originally Posted by ChuckBeez View Post
    any thoughts on how i can raise that cya? from my reading so far i'm going to have to have cya in there for the chlorine to stay in. should i do that sock method or just buy a few bags of the powdered shock?
    Using powdered shock to chlorinate every day will probably take about two weeks to raise the CYA to anything useful. It could take even longer to get it up to your target. For that reason, I suggest adding CYA granules via a sock. Shoot low; you might have some CYA already in the pool, just not enough to register, and you don't want to go too high. Target 30 for now. It's easy enough to add more later if you come up low.
    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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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    So given the numbers I posted, that's the main culprit? I'm planning to do the sock method you suggested... is that something I can purchase at Leslie's or Walmart? Is it going to be labeled as stabilizer and or conditioner? Also how much should I add and should I keep the floater in there with the pumps running 24/7? Thanks!
    15,000 Gal In Ground Pool Vinyl Liner DE Filter

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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    Quote Originally Posted by ChuckBeez View Post
    So given the numbers I posted, that's the main culprit? I'm planning to do the sock method you suggested... is that something I can purchase at Leslie's or Walmart? Is it going to be labeled as stabilizer and or conditioner? Also how much should I add and should I keep the floater in there with the pumps running 24/7? Thanks!
    With no or very low CYA, any bleach you add is destroyed by the sun within hours. There's also a slim possibility that whatever CYA was in the pool was converted to Ammonia, which in itself will consume bleach about as fast as you can pour it in. But that's kind of unlikely, since the water should be green and refuse to change if it has a bunch of Ammonia.

    This article in Pool School tells you what to use to change what and how to add it: http://www.troublefreepool.com/conte...ool-chemicals\

    This article will tell you how to use poolmath to determine how much to add: http://www.troublefreepool.com/conte...ool-calculator

    I'm going to make you muddle through and figure out how much you need to buy. You can always ask us to check your answer before you start adding stuff. But it's really important that you learn to do this yourself. If you just want someone to tell you to add X amount of Y chemical, you might as well go to the pool store.

    Let whatever's in the floater dissolve, and then switch over to bleach. It's not as convenient as pucks, but it doesn't take much time every day and you have much more control. See How to Chlorinate.

    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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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    Got it sounds like I need to brush up on these readings... confident I can get it, thanks for the right direction.
    15,000 Gal In Ground Pool Vinyl Liner DE Filter

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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    Since I needed CYA in the pool, I added 4lbs of it last night via the skimmer and have kept the pumps running. I have some sodium hypochlorite 12.5 % bleach laying around so given the pool math, to get from a shock level of 12, I need to add 178 oz of the hypochlorite.
    15,000 Gal In Ground Pool Vinyl Liner DE Filter

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    Re: Algae Nearly Gone After Being Closed for 2 Years.

    So I've been gradually increasing my FC and as of now it's at a 8.6 with a CYA of 30. I'm trying to get it to shock level of 12 but I'm getting discouraged since I still see algae in the pool. Any advice? I've been adding bleach daily.
    15,000 Gal In Ground Pool Vinyl Liner DE Filter

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