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Thread: Chlorine at zero all of a sudden

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    Chlorine at zero all of a sudden

    Ok, starting to feel stupid. Something went wrong.

    FC 0
    CC 0
    PH 8.2
    CYA 70
    TA 80
    CH 300

    Pool is clear.

    The only thing different is that I added ProTeam Metal Magic initial dose for a new pool since the concern that PB provided it and expected it to be used for warranty purposes.

    On 5/24 in the evening the Metal Magic was added.
    On 5/25 FC measured 0. Added 64oz of Chlorine - Using the K-1000 kit
    On 5/25 after about an hour, it still measured 0. Using the K-1000 kit

    Now:
    -used the FAS-DPD and chlorine is still zero
    -Surprised by the PH going up to 8.2, have not seen that kind of jump, yesterday it was at 7.5.

    Added 30oz MA to bring PH down

    Added 60oz of Bleach

    Thanks for your help. I think I am regretting adding the Metal Magic.
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
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    Re: Chlorine at zero all of a sudden

    With new plaster, you are going to be fighting that pH rise for a while it's normal. Don't worry about the metal magic too much.

    Are you familiar with the ammonia test/cure?
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
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    Re: Chlorine at zero all of a sudden

    Quote Originally Posted by Mr Bruce View Post
    Are you familiar with the ammonia test/cure?
    No, i am not. I can probably search it out.
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
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    Re: Chlorine at zero all of a sudden

    If it hasn't eaten your CYA it's probably not there. Regardless,

    Here you go from memory.

    Pump running:
    Raise FC to 10.
    Wait 10 minutes. Test.
    If FC loss > 50 %, repeat.

    Repeat until you get a very small or no loss.
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart

  5. Back To Top    #5

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    Re: Chlorine at zero all of a sudden

    I just had my son test again and we are still at zero.

    Since last night, have added more than a gallon.

    He is adding all the remaining chlorine on-hand about, about 80 oz but to bring it up to 10, I need 153oz. We will test again in 30 min.
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
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    Re: Chlorine at zero all of a sudden

    You are overtesting and underSLAMming! Skip the ammonia (you don't have it) and SLAM the pool. Don't be stingy with the chlorine. Dose it right up to the FC SLAM Level and then make it your job to keep it there, regardless of the consumption.

    Before you know it, it'll start to stay in your pool longer and longer.
    Dave S.
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    Re: Chlorine at zero all of a sudden

    Quote Originally Posted by duraleigh View Post
    You are overtesting and underSLAMming! Skip the ammonia (you don't have it) and SLAM the pool. Don't be stingy with the chlorine. Dose it right up to the FC SLAM Level and then make it your job to keep it there, regardless of the consumption.

    Before you know it, it'll start to stay in your pool longer and longer.
    I wasn't trying to SLAM just yet but realizing that might be in my future. Did not know why the chlorine would be disappearing so quickly. Still not sure because ammonia would eat the CYA as well if I understand correctly.

    My son tested again a bit ago after adding the chlorine and it is now showing 2ppm. I will be picking up more on my way home and work on slamming it tonight. Bummer since we have a pool party scheduled for this weekend.
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
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    Re: Chlorine at zero all of a sudden

    On my way home with 10 gallons of Walmart chlorine to get this under control
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
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    Re: Chlorine at zero all of a sudden

    pool party may not be in jeopardy - as duraleigh says, get it up to SLAM level right now and do whatever you have to do to keep it there - if the water still looks good, you may have caught it in time to stop the pool from going swamp on you - and as long as the FC is at or below SLAM level, people can swim anyway - I have had a couple times where something unusual happened, and the FC cratered to zero - but if I caught it right away while everything still looked good, I could knock it up to SLAM level right away and have everything calmed down in a couple days - but the key is do not hesitate - get it up there and keep it up there - dose, test, dose, test, dose, test - at first test and dose as often as you can, hourly or better if possible - the faster you get it up and the better you keep it up the faster you will get it under control - and if it is dropping fast at first, it will slow down before too long

    be sure to review the SLAM procedure and do everything it says including brushing and keeping the filter cleaned
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    Re: Chlorine at zero all of a sudden

    Thanks, just added 2.7 gallons, water is still clear l. No sign of algae and it did hold a little chlorine over the afternoon.

    I am not going to be happy that i lost my speedstir pill, already new on order but timing is bad...
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
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    Re: Chlorine at zero all of a sudden

    Alright, at 33 cl now, overshot it, will let it fall now
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
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  12. Back To Top    #12

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    Re: Chlorine at zero all of a sudden

    FC 32.5
    CC 0 - maybe .5

    I had to add some water as it was low but did that about an hour before the last test. Brushed and vacuumed. Water is perfectly clear and nothing growing anywhere that we can see.

    Will see what it is in the morning.
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
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  13. Back To Top    #13

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    Re: Chlorine at zero all of a sudden

    FC 29.5
    CC 0

    I will let it fall today since the goal was 24 and I was at 33, 29.5 now.
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
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    Re: Chlorine at zero all of a sudden

    Quote Originally Posted by mgmoore7 View Post
    FC 29.5
    CC 0

    I will let it fall today since the goal was 24 and I was at 33, 29.5 now.
    Was that your overnight loss? Anything over 1 shows the need to do the SLAM......
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  15. Back To Top    #15

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    Re: Chlorine at zero all of a sudden

    Quote Originally Posted by PAGirl View Post
    Was that your overnight loss? Anything over 1 shows the need to do the SLAM......
    It was 3, i am going to continue the slam today, but let it fall to correct SLAM level of 24.
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
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    Re: Chlorine at zero all of a sudden

    Quote Originally Posted by mgmoore7 View Post
    It was 3, i am going to continue the slam today, but let it fall to correct SLAM level of 24.
    Gotcha. Read it before my coffee kicked in, lol, didn't think of that. Hopefully it will be a quick fix for you!
    26' X 52" Intex Ultra Frame. Intex Sand Filter
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    You can lead a horse to (clear) water, but you can't force him to swim in it!

  17. Back To Top    #17
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    Re: Chlorine at zero all of a sudden

    You caught something or that stuff did something BUT it is all good now. Know you can swim as long as your FC is just under your SLAM level for you CYA using this chart:

    Pool School - Chlorine / CYA Chart

    I would keep is at SLAM lever until just before your party. Let it go down for the party THEN push it back up to kill anything left and what they add while swimming.

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    Re: Chlorine at zero all of a sudden

    Thanks Kim and PAGirl.

    Sure am glad to be part of this community and not relying on a pool store.
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
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  19. Back To Top    #19
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    Re: Chlorine at zero all of a sudden

    You wallet is very glad also! $$$$

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

  20. Back To Top    #20

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    Re: Chlorine at zero all of a sudden

    FC held overnight
    CC .5
    Clear water

    All appears to be well.
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
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