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Thread: No chlorine no cya

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    No chlorine no cya

    Have added 400 oz bleach last night and still no FC in pool or no CYA. Added 4lbs cya last wed but still not testing or i gess i shoukd say the level is actually 9. Can I continue bbb method and added another 400 oz bleach or do I need to add a powdered dichlor with cya bought from biogard called smart shock? It has copper in it which scares me and I would rather stick with bbb method but how do you raise cya on bbb method?
    16 X 32 rectangle vinyl inground pool
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    JasonLion's Avatar
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    Re: No chlorine no cya

    Welcome to TFP!

    What are your other levels? Also, how large is your pool?

    I wouldn't expect the CYA to show up on the test yet, though you CYA level is most likely over 10 by now.

    I recommend sticking with bleach.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: No chlorine no cya

    22000 gal pool vinyl liner salt water generator ph 7.2 ta 169
    All other tests where within the correct ranges. Salt level is 3250.
    16 X 32 rectangle vinyl inground pool
    22,000 gallons
    Hayward pump w/ sand filter
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    JasonLion's Avatar
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    Re: No chlorine no cya

    400 oz of bleach really isn't that much. It wouldn't have even gotten you to shock level.

    I suggest you read the article on how to chock your pool in Pool School and follow those directions.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: No chlorine no cya

    I went to thepoolcalculator.com and it said to add 496oz to go from 0 to 10. So should I not trust this site?
    16 X 32 rectangle vinyl inground pool
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    JasonLion's Avatar
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    Re: No chlorine no cya

    The Pool Calculator is fine. But 400 oz once is not the same as 500 oz every hour or two until the FC level holds.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: No chlorine no cya

    Holy cow!!! No one told me every hour until FC holds. I will give this a try ASAP. Now it will hold even if no cya? How long to hold FC at 10 if I manage to achieve this?
    16 X 32 rectangle vinyl inground pool
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    JasonLion's Avatar
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    Re: No chlorine no cya

    I suspect you have some CYA by now, but even so you will lose some chlorine during the day time. The crucial info is what happens after sunset.

    You really should take a look at the article on how to shock your pool in Pool School.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: No chlorine no cya

    Your questions are a little hard to understand because of typos but I think you are asking if it will hold the FC if there is no CYA. Didn't you put CYA in your pool? If so, (4 lbs?) then your CYA is a little less than 20ppm and you should put in 8 more pounds to get somewhere around 60ppm.

    Chlorine is consumed by two things....sunlight and organics in your pool. If you lose chlorine overnight, then you have organics in your pool and must put in A LOT of chlorine to kill them.

    Reading the article on shocking your pool up in Pool School should help you.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: No chlorine no cya

    Just added 6 96oz bottles bleach. Waiting 1 hour to test. Thank you so much for all your advice. I am going to win this battle!!!
    16 X 32 rectangle vinyl inground pool
    22,000 gallons
    Hayward pump w/ sand filter
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    heater

  11. Back To Top    #11

    Re: No chlorine no cya

    By 9pm fc back down to 3-5. Added 300 oz bleach. Also noticed I have no CC -- is this normal? I read algae makes high CC.
    16 X 32 rectangle vinyl inground pool
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    Smykowski's Avatar
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    Re: No chlorine no cya

    Quote Originally Posted by Parker12
    Also noticed I have no CC -- is this normal? I read algae makes high CC.
    Not always. I'm digging deep from a thread ChemGeek wrote awhile ago, but the gist is this....

    Chlorine is an oxidizer and a sanitizer. The sanitation is the killing of algae. All that's left is dead algae, which gets filtered out of the water. The oxidation is the breaking up of non-organic compounds (usually urea, and other nitrogen based yuk). Combined chlorines are the result of that chemical process.
    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
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    Mod Squad Bama Rambler's Avatar
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    Re: No chlorine no cya

    You can have algae and not read my CC's.

    What does your water look like?
    Just keep after it and you'll be done soon.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Re: No chlorine no cya

    We are making headway!!! I can see the bottom of the liner in the shallow end and 1/4 way down into the deep end!!! My chlorine was down to 2 at 730am so I added 600 oz of bleach. My ph is 7.1 so may need to add some borax later and cya is less than 30 but not sure what because Taylor test kit only starts measuring at 30 ppm. So may add stabilizer in sick by return tonite?

    Only thing that bothers me is I went to back flush this am and no dirty water. Looked tiny bit cloudy that's all. Maybe particles are too tiny? My husband is going to clean the pool after church. I think he wants to vacuum without turning to waste and back flush in the middle of cleaning. This might be ok since it doesn't appear our sand filter is bothered by the suspened solids clouding out pool?
    16 X 32 rectangle vinyl inground pool
    22,000 gallons
    Hayward pump w/ sand filter
    Aquarite swg
    heater

  15. Back To Top    #15

    Re: No chlorine no cya

    10am update -- chlorine level down to 7 so I added 360oz bleach. Husband going to clean pool now. Water still cloudy but getting clearer and more blue by the hour. Thanks for all your help!!! Still a little worried about no CYA and TA is holding at 180.
    16 X 32 rectangle vinyl inground pool
    22,000 gallons
    Hayward pump w/ sand filter
    Aquarite swg
    heater

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    Re: No chlorine no cya

    Still a little worried about no CYA
    Did you test for it again? If not, don't.

    If you put CYA in your pool, it is in there. Test for it on Tuesday and plan on getting 4 more lbs.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  17. Back To Top    #17

    Re: No chlorine no cya

    Yes I tested again no cya at 10am.

    1pm update -- water is way clearer after more chlorine and vacuuming. I can now see the drains in the deep end and all of the shallow end is clear. Deep end still hazy. Chlorine dropped to 7ppm again at 1PM so I added 400oz more chlorine. When Pool School says to continue to add bleach until there is only a 1ppm change in FC, I don't want my level to be 10 though? When do I stop shocking? Also, when do I turn the SWG back on normal? I have it set on 50% right now. Cover is open and very sunny and 75 here today.
    16 X 32 rectangle vinyl inground pool
    22,000 gallons
    Hayward pump w/ sand filter
    Aquarite swg
    heater

  18. Back To Top    #18

    Re: No chlorine no cya

    5pm update -- water continues to improve but not crystal clear. FC down to 4.5ppm so I guess I need to add another 6 gallons bleach to get back to shock level. Then I guess I will check it before I go to bed and add more bleach if level drops again.
    16 X 32 rectangle vinyl inground pool
    22,000 gallons
    Hayward pump w/ sand filter
    Aquarite swg
    heater

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    Mod Squad Bama Rambler's Avatar
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    Re: No chlorine no cya

    Good plan. Keep it up and you'll be done soon.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  20. Back To Top    #20

    Re: No chlorine no cya

    FC dropped from 10 to 4.5 overnight so I guess I am not done. Added 5 more gallons bleach this am. Will FC hold if no CYA? Mayb
    16 X 32 rectangle vinyl inground pool
    22,000 gallons
    Hayward pump w/ sand filter
    Aquarite swg
    heater

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