Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: Chlorine question

  1. Back To Top    #1

    Chlorine question

    I'm a new pool owner and planning to go BBB. I have a 27,000 gallon IG pool The pool school says I should be adding 2-3ppm daily of chlorine. If I use 1 as my starting value in the pool calculator, and 4 as my ending value (simulating the addition of 3ppm), that suggests for a 27,000 gallon pool I would need to add 168oz daily of 6% bleach.

    Is that right? I think that's roughly 2 bottles per day or so. At $3 per bottle that's $6 per day, or $180 per month.

    Am I missing something here?
    Jason

    30k IG plaster pool w/attached spa, Hayward Old school Jacuzzi Magnum Force 2HP single speed pump w/AO Smith motor (UST1202), Hayward 6020 DE filter, Poolskim, Polaris 380, Raypak natural gas heater, TF-100 test kit

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Chlorine question

    Quote Originally Posted by jayatpitt
    I'm a new pool owner and planning to go BBB. I have a 27,000 gallon IG pool The pool school says I should be adding 2-3ppm daily of chlorine. If I use 1 as my starting value in the pool calculator, and 4 as my ending value (simulating the addition of 3ppm), that suggests for a 27,000 gallon pool I would need to add 168oz daily of 6% bleach.

    Is that right? I think that's roughly 2 bottles per day or so. At $3 per bottle that's $6 per day, or $180 per month.

    Am I missing something here?
    Yeah, that's right in its essence.

    Except Chlorox is now 8.25%, which works out to almost perfectly one 121 oz jug per day...which is still about 3 bucks a day.

    The good news is you might not lose 3 ppm/day. If the pool gets little use and you keep it covered, your chlorine usage will go waaaay down.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Chlorine question

    Also realize the minimum FC you should maintain is dependant on your CYA level ... and likely well above 1ppm.

    You may have just used 1ppm as an example, but wanted to be sure.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  4. Back To Top    #4
    elwood58's Avatar
    Join Date
    May 2012
    Location
    Sun City West Arizona (2nd Home)
    Posts
    639

    Re: Chlorine question

    The cost, and bottle management, is what led some of us to switch to Salt Water Chlorine Generators.
    19204 Gallon L Shape with a 10X10 2nd Step Baja Ledge. Intellichlor IC-40, IntellipH, Cartridge Filter, Pentair Heater/Chiller (Heat Pump). Tons of Deck with Deck Jets. Construction Complete 6/5/17.

    "If you don't measure it, you can't manage it!"

  5. Back To Top    #5
    BoDarville's Avatar
    Join Date
    Jun 2012
    Location
    DFW, Texas
    Posts
    3,840

    Re: Chlorine question

    jayatpitt:

    If you are serious about minimizing your chlorine usage, keep as much debris out of your pool as possible. This includes cleaning the skimmers, pump basket, and vacuum filter (if you have one) - these can be the pool equivalent of "electrical vampires" (appliances that consume some power even when turned "off"). I am fanatical about this (wife would use other words) but you get the point Accumulating organic debris in these places, as well as in the pool itself, will increase chlorine demand slightly but consistently and cumulatively.

    I averaged about 2 ppm FC loss per day at the height of swim season in an uncovered pool that get sunlight for much of the day while running with CYA in the low to mid 30's for much of last season. Looking at my records for last year, I spent $46 for 6% bleach in June (which included a pool party), $37 in July, and $37 in August (had another pool party). In fairness, August also included $32 for PolyQuat 60 algaecide and $30 for trichlor pucks - the latter two items I used while on vacation for two weeks. Were it not for that, I would probably have spent $45-50 for bleach in August. Yes, it is possible that some of the bleach I used in a given month may have been from inventory I purchased in a prior month. But even at that, I never came close to $180 / month. Attention to the details mentioned above played a role in managing FC use.
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
    A good test kit is an investment, not an expense.

Posting Permissions

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