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Thread: Opened the pool up. Green and swampy.

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    shaffe43's Avatar
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    Opened the pool up. Green and swampy.

    Well first opening went ok as far as equipment. Water was green and algea everywhere. So time to slam. I put what should have been enough bleach in to get to at least 10ppm (0 CYA right now) but the test is only showing 7.5ppm. Here are my readings:

    FC: 2 (it clears right away then 10s later its pink again)
    Or
    FC: 7.5 (it stays clear)

    CC: 3
    TC: 5 or 10.5
    CH: 225
    TA: 160
    CYA: 0

    What should I.do about the CYA and what level of FC should I be shooting for?

    Thanks!!!
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    Re: Opened the pool up. Green and swampy.

    Welcome to TFP!

    One test result I don't see is pH. Ideally, I would adjust that to somewhere between 7 and 7.5 before you begin the SLAM and then ignore it until the SLAM process is complete.

    I would add enough granular CYA to get to 30 ppm. Add the CYA to an old gym sock or similar garment, tie it off and either hang it in front of a return jet or in the skimmer basket (since you will be running the pump 24/7 until you are done with the SLAM). Although it will take a couple of days for the granules to dissolve, assume the entire CYA dose is present in the pool for the purpose of chlorine dosage. Then dose FC to 12 ppm using liquid bleach and try to maintain that level throughout the SLAM. This will require you to test FC several times a day, at least at the start of the SLAM. FC demand will gradually reduce as the water clears.
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    Re: Opened the pool up. Green and swampy.

    Sorry missed the ph test. Did it quickly and got 8.2.

    Also what is the correct reading for the FC the higher or lower one? I was only waiting like 10s and it would turn pink again.

    Thanks!

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    Re: Opened the pool up. Green and swampy.

    The first time it clears is your reading. Ignore when it goes back to pink.
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    Re: Opened the pool up. Green and swampy.

    Welcome to TFP !
    The two experts above got you covered.
    If you have any debris in the pool get them scooped out as best you can. It'll take some time to clear, gotta have some POP. Pool owner patience ! 😎
    Jeff
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    Re: Opened the pool up. Green and swampy.

    Awesome thanks guys! I'll report back in with results!

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    Re: Opened the pool up. Green and swampy.

    Also should I stop the SLAM process since I had already started it? Rather than adjust the PH and try and keep FC at 12ppm

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    Re: Opened the pool up. Green and swampy.

    You have to adjust PH when FC is below 10. The PH test will read a false high with FC levels of 10 or more.
    Jeff
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    Re: Opened the pool up. Green and swampy.

    Awesome! Thanks!

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    Re: Opened the pool up. Green and swampy.

    Because I've been reading a lot of the "cya to ammonia" threads the past couple of days I noticed something.

    In the first post you said you added enough bleach to get you to FC 10, yet when you tested you only got FC 2. How soon after adding that bleach did you test?

    Did your pool have CYA when you closed last year? How much?

    From what I've just been reading the last few days here, if there's ammonia present there are high CCs and the FC gets eaten up really quickly. I've been reading about people adding bleach and testing 30 minutes later and it's gone. In the case of the ammonia being present I've also seen it recommended to wait on adding CYA until the ammonia is taken care of so it doesn't work against you.

    Throwing in my 2 cents here...and deferring to the experts! Could just be a lot of algae eating up the FC.
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    Re: Opened the pool up. Green and swampy.

    There was about 4 hours between when I added the bleach and when I tested.

    I didn't know what I was doing last year. Tbh so I just shocked it and went about closing it.

    I added the acid and will check again to see what the levels are. I would have expected then to be higher than 2.

    Heh poolpal says I needed 11lbs of stabilizer so I can see how that would take a bit to disolve.

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    Re: Opened the pool up. Green and swampy.

    Update on the pool:
    (Shooting for FC of 12)

    PH: 7.2
    FC: 2.5 (man I cant get this up at all even put an extra jug of bleach in)
    CC:12 (maybe this is why)
    TA:110
    CYA: something is there id guesd 10? Sock is soaking with enough stuff to make it 30.


    I should be using liquid 8.25 bleach for the SLAM correct?

    Thanks!

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    Re: Opened the pool up. Green and swampy.

    You may have ammonia in there if the CC's are that high consuming the chlorine along with the algae.
    Using the bleach is fine.
    Jeff
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    Re: Opened the pool up. Green and swampy.

    So just keep on putting more bleach in?

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    Re: Opened the pool up. Green and swampy.

    Quote Originally Posted by shaffe43 View Post
    So just keep on putting more bleach in?

    Sent from my SCH-I605 using Tapatalk
    Yep. That's all you can do is keep dosing it.
    Jeff
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    Re: Opened the pool up. Green and swampy.

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    Re: Opened the pool up. Green and swampy.

    Bleach is a consumable item and needs to be replenished each time you test when you are doing the SLAM.

    So, yes, keep putting bleach in to get back to your target value of 12 ppm. The CC's test being that high is sure indicative of ammonia. That means your FC will be consumed VERY rapidly when you first begin the SLAM.

    Just keep bringing it back to 12 ppm each time and, eventually, the chlorine will kill all the ammonia and your pool will start to retain FC.

    There is no reason to test for ANY of the other parameters while you are SLAMming....just the FC and CC's
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    Re: Opened the pool up. Green and swampy.

    Awesome thanks guys! Off to Wal-Mart to get more cow bell err bleach lol

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    Re: Opened the pool up. Green and swampy.

    Quote Originally Posted by shaffe43 View Post
    Awesome thanks guys! Off to Wal-Mart to get more cow bell err bleach lol

    Sent from my SCH-I605 using Tapatalk
    We definitely need more cowbell/bleach...
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    Re: Opened the pool up. Green and swampy.

    More, more, more (said in a sing-song voice) bleach that is! Make all of the bleach bottles into a building and take a pic of it! LOL

    It can be done. Once it is done it will be easy. You just have to get there first.

    I wonder what you can do the next time you go to close the pool to keep from it going green?

    I keep my pool open year round so have NO idea about closing. (We live in Florida)

    Kim
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