Become a TFP Supporter Pool Math Forum Rules Pool School
Page 1 of 2 12 LastLast
Results 1 to 20 of 21

Thread: Very high CC levels

  1. Back To Top    #1

    Very high CC levels

    i am with tc on the frustration level. i started converting 5 or 6 weeks ago. pool looks great,
    but as yet i am unable to get cc numbers down. i am adding 9 or 10 gallons of bleach daily
    to keep bringing fc up to 15 and still get cc readings off the chart (30 or higher). i know
    someone will ask for all my numbers, so here they are:
    FC:8
    CC:30+
    TA:150
    PH:7.2
    CH:300
    CYA:45
    any suggestions?
    24,000 gallon ig fiberglass pool
    1 hp hayward pump
    hayward sand filter (250 lb)
    madisonville, ky

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Very high CC levels

    With CYA at 45, you can use a slightly higher FC target level, 20, to speed up the process. Other than that, you want the pool to get lost of sunlight. Sunlight and high FC levels will break down CC.

    One quick double check. Have you been using any MPS? MPS can register as CC on the test, even though it isn't.
    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

  3. Back To Top    #3

    Re: Very high CC levels

    what is mps?
    24,000 gallon ig fiberglass pool
    1 hp hayward pump
    hayward sand filter (250 lb)
    madisonville, ky

  4. Back To Top    #4
    reebok's Avatar
    Join Date
    Apr 2009
    Location
    Lakeland, FL
    Posts
    1,268

    Re: Very high CC levels

    are you buying bags of non-chlorine "shock" at the pool store? can you confirm how you're doing your testing? that is an insane amount of cc's. are you doing a baqua conversion?
    16x32 21,000 gallon in-ground exposed aggregate, 1.5hp pump, 120 sqft catridge filter, birdcage, solar panels, aquavac tigershark qc robot.

  5. Back To Top    #5
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Very high CC levels

    MPS, also called KMPS, potassium monopersulfate, and potassium peroxymonosulfate, is a common form of non-chlorine 'shock'.
    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

  6. Back To Top    #6

    Re: Very high CC levels

    i have been converting for 6 or 7 weeks now. as i said pool looks great, sparkles
    and all in the sun. i just can't get the cc numbers down. i did use non chlorine shock
    in the very beginning at the direction of pool store (before i found this site), but that
    was over 6 weeks ago. could non chlorine shock still be giving high cc numbers after 6 weeks?
    24,000 gallon ig fiberglass pool
    1 hp hayward pump
    hayward sand filter (250 lb)
    madisonville, ky

  7. Back To Top    #7
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Very high CC levels

    In general no, it will usually be gone after one week (or less). It is remotely possible that it could still be around if you used a really huge amount to start with.

    If you are doing a baquacil conversion, how did your CYA level get up to 45? That can really slow things down dramatically.

    It seems unlikely that this has anything to do with it, but now would be a good time to review your test technique, to make sure you are doing the chlorine test correctly.

    What does your water look like?
    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

  8. Back To Top    #8

    Re: Very high CC levels

    ok lets start from the beginning. i decided to convert from baq to chlorine at start of this
    pool season. that was before i had found this site, so i was converting with the help of
    the local pool store. they had me add 3 lbs of non chlorine shock for 2 days (6 lbs total).
    they then had me add 4 lbs of granular shock per day for a week. at this time the pool
    looked perfect so they called conversion complete, had me add cya, change the sand
    and sold me a bucket oftri-clor pucks. this was from may 15 thru may 23.then when i
    found this site and ordered the test kit i realized that chlorine numbers were not right , especially
    the cc number. believe me, i questioned my method of testing also, so i took a sample
    to the pool store and they said that yes my cc numbers were off the chart. they also
    said don't worry about it , just keep fc up to 4 or 5, shock weekly and eventually cc
    would come down. they also said go ahead and swim, it'll be ok, but as i have a 4 yr old
    grand daughter, i don't really like the idea of her being in the pool right now. so now i am bringing
    fc up to 20 at least twice a day, yet see no drop in cc. one other issue that might be causing
    problems might be water mold/pink algae. i fought this for years on the baq and the way they had you
    try to deal with it was to pour baq shock directly into skimmer to remove water mold/pink
    algae from the lines. this somewhat worked as you would always have pinkish/white clumps
    of **** on the bottom of the pool the next day. i have noticed that every time i bring fc up to
    shock level that the next day there will be white clumps on the bottom of the pool. so if there is still
    water mold in the lines will that cause high cc and if so, how do i get totally rid of it? and by the way i am using nothing but liquid chlorine now.
    24,000 gallon ig fiberglass pool
    1 hp hayward pump
    hayward sand filter (250 lb)
    madisonville, ky

  9. Back To Top    #9
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Very high CC levels

    Alright, I see how this happened. Lets go up to high shock level, around 26 or 27, especially in the evenings. That will speed things up more.

    Yes, any water mold/pink algae in your plumbing is going to be contributing to the CC level. The chlorine will kill it, but it can take it a while if you have a particularly bad infestation. You should also make sure that you clean out the filter as well as you can. Any water mold or baqgoo caught in the filter will also be contributing to the CC level.

    Having CYA in the water is slowing things down, but there is nothing you can do about that at this point.

    That wasn't enough MPS to still be causing a problem after six weeks.
    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

  10. Back To Top    #10

    Re: Very high CC levels

    i have already changed sand once, would you recommend changing it again when
    or if i ever get cc's down?
    24,000 gallon ig fiberglass pool
    1 hp hayward pump
    hayward sand filter (250 lb)
    madisonville, ky

  11. Back To Top    #11
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Very high CC levels

    When the FC level holds overnight you should change the sand again. Have you done an overnight FC loss test recently?
    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

  12. Back To Top    #12

    Re: Very high CC levels

    still have very high cc (25+) , but i think maybe it may be from water mold
    instead of any lingering baq. today after adding chlorine i was fooling
    with my pump and switching it quickly from skimmer to drain and back and forth.
    i noticed that when the full pressure would hit either skimmer or main
    drain, there would be hunks of white slime come through the pump.
    would that be enough to cause high cc in itself? and if so, should i just
    continue at shock level til its gone? also there is a product from united
    chemical called pink treat (http://www.swimpool.com/products/pink.htm)
    that i used with some success with baquacil .
    this product is also compatable with chlorine. would this chemical speed
    up the process or should i just keep chlorine at high levels til cc comes down?
    24,000 gallon ig fiberglass pool
    1 hp hayward pump
    hayward sand filter (250 lb)
    madisonville, ky

  13. Back To Top    #13
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Very high CC levels

    I would stick with chlorine. Using additional products can create more problems than it solves. Just keep the FC level high until the CC level comes down and let the pool get as much direct sunlight as possible (ie don't cover it during the day).
    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

  14. Back To Top    #14

    Re: Very high CC levels

    so do you think the remaining pink algae/water mold in the lines would
    cause cc numbers this high?
    24,000 gallon ig fiberglass pool
    1 hp hayward pump
    hayward sand filter (250 lb)
    madisonville, ky

  15. Back To Top    #15
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Very high CC levels

    A lot of the CC is still left over from the middle of your conversion. The pink algae/water mold is adding to that, making it take longer to clear than it would otherwise.
    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

  16. Back To Top    #16

    Re: Very high CC levels

    i must admit i am becoming very frustrated. i have spent $700 on bleach
    and granular chlorine in 2 months and still can't get cc down. just checked pool and
    fc was 5.0 and cc was 25.0. while 25 on cc is better than it has been,
    and pool looks very good, its getting expensive to spend $10 to $12 per day
    for bleach. any suggestions anyone?
    latest numbers:
    fc-5
    cc-25
    ph-7.0
    ta-140
    ch-280
    cya-40

    ps- i am still getting chunks of pink algae coming out of the lines.
    any suggestions on cleaning out the lines other than keeping chlorine at shock levels?
    24,000 gallon ig fiberglass pool
    1 hp hayward pump
    hayward sand filter (250 lb)
    madisonville, ky

  17. Back To Top    #17
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,965

    Re: Very high CC levels

    Did you change out the sand again (Jason suggested a few posts above)

    I'm at a loss, I wish I had advice for you.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  18. Back To Top    #18

    Re: Very high CC levels

    well finally cc has started coming down, after shocking pool every day for 2 months.
    about 10 days ago cc was still 25, then the next day it was 18, then 15, 13,
    11, 10, 8, and today 4.5. i know its not there yet but hopefully its just a
    matter of a few more days. my question now is, will the process of burning off
    the cc cause a higher loss of fc?
    24,000 gallon ig fiberglass pool
    1 hp hayward pump
    hayward sand filter (250 lb)
    madisonville, ky

  19. Back To Top    #19
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Very high CC levels

    Burning off CC does consume FC. But that has been happening the entire time.

    Previously, CC was being created, which consumes FC, and destroyed, which consumes FC, at about the same rate. Now that whatever was being broken down to create the CC is gone, your FC usage should fall slightly.
    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

  20. Back To Top    #20

    Re: Very high CC levels

    well finally my cc is zero. i want to thank everyone who responded
    with suggestions and tips, especially jason. every time i became frustrated
    and felt like giving up jason came through with tips on how to proceed.
    my pool looks great , fc is holding and cc in gone. so thank you again
    jason for your advice. and for all others using this site, please contribute
    to keep it going. it is well worth the price.
    24,000 gallon ig fiberglass pool
    1 hp hayward pump
    hayward sand filter (250 lb)
    madisonville, ky

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •