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Thread: Chlorine too High?

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    Chlorine too High?

    Hi Everyone:

    I just found the address for this forum on the Pool Solutions Forum. I'm so glad to see that there is now a forum available for those of us who hadn't previously joined that one!

    Anyway, we just changed to the BBB system this month when we opened our 30 gal, IG vinyl pool. We had fought algae on & off last year & went crazy trying to kill it when we first opened the pool at the beginning of this month. I finally found the Pool Solutions site & got a "tiny" bit educated. Long story short....our CYA was close to 150.

    We've drained some water and today's readings are:

    CYA: 70
    FC: 13.5
    CC: 1
    PH: 7
    TA: 80

    Obviously our readings aren't great. We don't mind living with the CYA at 70, and we know we have to increase the PH. However, what about the FC & CC? Is it okay to just wait for the FC to fall into the range indicated by the "Best Guess" Table? (It will take a while, we have a solar cover on most of the day right now.) Should I worry about the CC reading?

    Thanks for your help!!
    22,000 Gallon, IG, Vinyl, Sta-Rite Sand Filter
    Milwaukee, WI area

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    Re: Chlorine too High?

    Welcome to the forum.

    How does your water look?

    My first thought is that your chlorine is too low. The CC reading of 1.0 indicates the need to shock so boost your Cl up into the 20ppm range and keep it up there 'til the CC drops back to .5 or less.

    Your pH is only slightly low so I would address that later. If you'll get some Cl in there, preferably bleach, and keep your pump running 24/7 for a day or so, you'll eliminate any residual algae and then you can fine tune your other elements. Your not in bad shape, particularly if your water's not too messy......let us know and we'll all help get it sparking for the rest of the Summer.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

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    Our water looks clear. Up until last night, we've been running the pump (sand filter) 24/7 for about three weeks to clear out all of the algae. My husband vacummed the pool to waste yesterday to get any residual that might be left on the bottom & to help lower our CYA.

    We'll go ahead & shock it as you recommended. If I'm understanding how the math works: we need to add 2-3 gallons of bleach (we have 6%) to boost our FC to 20. Does that sound right? (25-30,000 gallon pool)

    Should we then keep running our pool 24/7 until the CC drops below .5?

    My husband is also wondering if we should floc the pool....it always made the water clear & "sparkly" in the past. Or should we avoid floc now that we want to stay with the BBB method?

    Thank you so much for all of your help!!!!
    22,000 Gallon, IG, Vinyl, Sta-Rite Sand Filter
    Milwaukee, WI area

  4. Back To Top    #4
    Keep your FC up until your CC clears.

    You do not need to floc... keep with the bleach, brushing, and backwashing (HA! I just invented the 2nd BBB!!) and your water will be sparkly in no time!

    Someone here (EDIT to correctly give credit to Waterbear) once said that a cloudy pool will clear in 7 days with good ol' BBB and patience, but with clarifier/floc it will take a week!

    8000 gallon 20' x 48" round vinyl frame pool, 12" sand filter (don't have the specs on the pump), TF100 test kit
    Handy Links: PoolMath, TF-100 Test Kit, Pool School, CYA-Chlorine Chart
    "Shock" is a process, not a product!

  5. Back To Top    #5

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    I also suggest keeping your cover off during the day, especially during peak noontime hours. The sun's UV rays help to break down combined chlorine. You may only need to do that for one day, possibly two. It is possible that your particular cover lets sun UV rays through, but in case it doesn't, having the cover off will help (it also helps to allow more outgassing of the by-products of breakdown of combined chlorine).
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

  6. Back To Top    #6
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    Quote Originally Posted by The Mermaid Queen

    Someone here (JohnT?) once said that a cloudy pool will clear in 7 days with good ol' BBB and patience, but with clarifier/floc it will take a week!
    That was ME!

  7. Back To Top    #7
    whoops! I have corrected my mistake!
    8)

    8000 gallon 20' x 48" round vinyl frame pool, 12" sand filter (don't have the specs on the pump), TF100 test kit
    Handy Links: PoolMath, TF-100 Test Kit, Pool School, CYA-Chlorine Chart
    "Shock" is a process, not a product!

  8. Back To Top    #8

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    Quote Originally Posted by OneMom
    Our water looks clear. Up until last night, we've been running the pump (sand filter) 24/7 for about three weeks to clear out all of the algae. My husband vacummed the pool to waste yesterday to get any residual that might be left on the bottom & to help lower our CYA.

    We'll go ahead & shock it as you recommended. If I'm understanding how the math works: we need to add 2-3 gallons of bleach (we have 6%) to boost our FC to 20. Does that sound right? (25-30,000 gallon pool)

    Should we then keep running our pool 24/7 until the CC drops below .5?

    My husband is also wondering if we should floc the pool....it always made the water clear & "sparkly" in the past. Or should we avoid floc now that we want to stay with the BBB method?

    Thank you so much for all of your help!!!!
    It will take more than 2-3 gallons of 6% bleach to raise your ppm from 1 to 20 for a 25-30,000 gallon pool. It will take 8 - 10 gallons of 6% bleach.
    Buggs

    14,000 gallon, in ground, plaster, free form, play pool.
    Sta-Rite Max-E-Glass with a 1.5 hp Emerson motor
    WaterCo Micron High Rate sand filter S750 490 lb, 4883 sq ft - using ZeoBest
    In floor Polaris cleaning system
    Blue Diamond robot for those after storm days when I can't wait overnight for the in floor to clean it.

  9. Back To Top    #9

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    2-3 gallons is correct. She's starting at 13.5
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  10. Back To Top    #10

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    May 2007
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    Milwaukee, WI
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    Thank you all so much for the quick replies. I really appreciate all of the help. I'll try not to bug you guys too often, but it sure is nice that there's somewhere to go if I get stuck!!
    22,000 Gallon, IG, Vinyl, Sta-Rite Sand Filter
    Milwaukee, WI area

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