Become a TFP Supporter Pool Math Forum Rules Pool School
Page 1 of 3 123 LastLast
Results 1 to 20 of 50

Thread: Chlorine armed robbery

  1. Back To Top    #1

    Join Date
    Jun 2013
    Location
    media pa ( 20 miles south of philly)
    Posts
    17

    Chlorine armed robbery

    I cannot seem to keep chlorine in the pool.Please review the last 48 hours below . I live in philly its been overcast / sunny for the last 2 days and hot.

    Sunday 9am
    FAC .5
    TAC 1.5
    ph 7.4
    TA 80
    CYA 40
    Calcium 240
    Total dissolved solids 1300

    so the recommendation was to shock the pool. i used 2 gallons of Sodium Hypochlorite Liquid

    Tuesday 7am -- did a quick FAC test -- no chlorine --so added 10lb of Leslie Chlor Brite granules to different areas of the pool .

    Tuesday 7pm pm did a full test results below
    FC 1.0
    TC 2.0
    TA 140
    ph 7.2
    Calcium 300
    CYA test 40

    Where does all the chlorine go ?
    Water is crystal clear .
    28K gal, IG plaster, KDI - American DE filter 48 sq ft , 3/4 HP WhisperFlo pump, 20 yr old pool Sylvan w/ attached spa , Polaris 280 cleaner w/ fine bag , bottom drain is pinched so using the skimmer only --TF-100 w/ SpeedStir

  2. Back To Top    #2
    pwrstrk's Avatar
    Join Date
    Aug 2012
    Location
    Elverson Pa.
    Posts
    4,758

    Re: Chlorine armed robbery

    What test kit are you using or are those test results from pool store?


    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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

    Re: Chlorine armed robbery

    Welcome to TFP!!!

    Chlorine is lost to 2 things: the sun and organics in the water.
    With a CYA of 40ppm, your loss to the sun should not be too bad, so that points to something in the water (as does your CC of 1 in the second set of data.

    What was the strength of the liquid chlorine you used? Even if it was 12.5%, 2 gallons would have only raised your FC level by 9ppm ... that is not even up to the shock level of 16ppm, which is based on your CYA: pool-school/chlorine_cya_chart_shock

    You need to SLAM the pool. [slam:1h41jv9x][/slam:1h41jv9x]

    What test kit are you using?
    And DEFINITELY stick to liquid chlorine.

    If you have not already, read Pool School (button at the upper right of the page) to understand the chemistry and chemicals.
    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
    techguy's Avatar
    Join Date
    Jul 2010
    Location
    Antelope, CA
    Posts
    2,687

    Re: Chlorine armed robbery

    The chlorine is doing it's job and killing the organics/algae in your pool. You can tell because your CC is changing. CC is the difference between the FC and TC. It represents the partially oxidize waste. FC is what is killing your organics and the CC is the waste.

    You need more FC in the pool and the best source of that is chlorine. Read the pool school and the CYA/Chlorine relationship. Your CYA is 40 and this is a good place to be.
    -- Guy --
    10K gallons in 21' Round 52 inch wall Aqualeader AG, Hayward Power Flow LX 1.5 HP pump motor, Hayward Perflex EC50AC DE filter w/Cellulose, Wide mouth skimmer, 2013 new Diver Dan (craigslist) to replace the faded old Hayward AquaBug. TF-100

  5. Back To Top    #5

    Join Date
    Jun 2013
    Location
    media pa ( 20 miles south of philly)
    Posts
    17

    Re: Chlorine armed robbery

    Sunday I got those reults from Pool store nearby

    I ordered and used the TF-100 test kit and used it today.

    Id like to think the results should be interchangeable

    and it was 12.5 % liquid shock
    28K gal, IG plaster, KDI - American DE filter 48 sq ft , 3/4 HP WhisperFlo pump, 20 yr old pool Sylvan w/ attached spa , Polaris 280 cleaner w/ fine bag , bottom drain is pinched so using the skimmer only --TF-100 w/ SpeedStir

  6. Back To Top    #6

    Join Date
    Jan 2010
    Location
    Randleman,NC
    Posts
    620

    Re: Chlorine armed robbery

    "Never trust pool store result's".......
    Leasure bay AG 24ft,52 in high.installed June of 1999. Hayworth S-180 T sand filter/Power-Flo Matrix 1horse 2 speed pump /Aqua Trol SWG/Using TF-100 Test Kit

  7. Back To Top    #7
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Chlorine armed robbery

    You got the Rolls Royce of test kits now ... trust yourself and start to SLAM it.
    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!

  8. Back To Top    #8
    UN1017's Avatar
    Join Date
    May 2012
    Location
    Sacramento, CA
    Posts
    288

    Re: Chlorine armed robbery

    Also....the 10 lbs. of Chlor-Brite you added just bumped up your CYA by 16. If you were 40 before you added it and 40 after, then something isn't adding up. You should be closer to 60 now. No more pucks or powders.
    15'x30' IG - Roman-style - 14K - Pebble Fina Classico
    Filter: Jandy CL460 Pump: Jandy Stealth SHPF1.5 SWG: Jandy AquaPure 1400 Cleaner: Jandy RayVac Test Kit: TF-100 w/SpeedStir

    Chlorine/CYA Chart----Extended Test Kit Directions----SLAM

  9. Back To Top    #9

    Join Date
    Jun 2013
    Location
    media pa ( 20 miles south of philly)
    Posts
    17

    Re: Chlorine armed robbery

    let me run the test again -- I dont trust the pool store results ...guy was on the phone doing my test !!
    28K gal, IG plaster, KDI - American DE filter 48 sq ft , 3/4 HP WhisperFlo pump, 20 yr old pool Sylvan w/ attached spa , Polaris 280 cleaner w/ fine bag , bottom drain is pinched so using the skimmer only --TF-100 w/ SpeedStir

  10. Back To Top    #10

    Join Date
    Sep 2009
    Location
    Greentown, IN
    Posts
    914

    Re: Chlorine armed robbery

    Even if he wasn't on the phone when he ran your test... they are notorious for being unreliable at best.
    Indiana, ABG 24'x52" Galveston by Blue Cascade (Craigslist buy w/part of deck included), 13,500 gallons, Intex SWG, solar panels mix 2, TF-100 test kit.

    Test kits compared
    Purchase test kits

  11. Back To Top    #11
    UN1017's Avatar
    Join Date
    May 2012
    Location
    Sacramento, CA
    Posts
    288

    Re: Chlorine armed robbery

    It is best to do it under the conditions listed in Extended Test Kit Directions - CYA Test.
    15'x30' IG - Roman-style - 14K - Pebble Fina Classico
    Filter: Jandy CL460 Pump: Jandy Stealth SHPF1.5 SWG: Jandy AquaPure 1400 Cleaner: Jandy RayVac Test Kit: TF-100 w/SpeedStir

    Chlorine/CYA Chart----Extended Test Kit Directions----SLAM

  12. Back To Top    #12

    In the Industry

    Donldson's Avatar
    Join Date
    Jun 2009
    Location
    NW Ohio
    Posts
    2,637

    Re: Chlorine armed robbery

    I wouldn't worry too much about restesting your CYA. If you trust that you had 40 and then added chlor-brite your CYA is about 60 now, whether it shows on the test or not. It may not show on the test this early so save your reagents and test in a week or two and treat your CYA as 60 in the meantime.

    Now that you have that did you start your SLAM process last night? You have the right test kit so you are ready to go. With a CYA of 60 your shock level is no longer 16, it is now 24 (this is why I hate dichlor and highly dislike the people who sell it). You need to raise your FC level to 24, preferably with liquid chlorine, and maintain it there per these instructions. With the TF-100 you are fully armed to do it the right way, don't stop until the 3 criteria are met!

    After you are done be sure to always maintain an FC above 5 ppm and you shouldn't have this problem again in the future.

    As an aside, results are NOT interchangable, I would trust TF-100 results from someone who has never used it before, before I trusted the most advanced pool store computer.
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
    Pool School - PoolMath - HIGHLY Recommended Test Kits

  13. Back To Top    #13

    Join Date
    Jun 2013
    Location
    media pa ( 20 miles south of philly)
    Posts
    17

    Re: Chlorine armed robbery

    thanks for all the replies -- I went through the pool school again and at the risk of being dumb questions , I have a few:

    1) Ok for the reagents etc to go down the kitchen sink drain after use with the the tf-100 kit

    2) are there different levels of liquid chlorine which one should I use for the SLAM process and I am correct assuming only avail at the pool store ? I have used this product called " Austins Pool tech Shock -- 12.5% Sodium Hypochlorite "sold in 1 gallon containers before and have some in the pool closet.Not sure How much I will need to buy if my CYA is 60 and I have to get the shock level up to 24.

    3. I have also developed a pool stain this year. My son poured some algiaecide into the pool back in may when it was chilly here in Philly and I noticed when they took the cover off there was a stain on the bowl of the pool I am assuming this is a different issue and can be addressed and wont be made worse with the SLAM process
    28K gal, IG plaster, KDI - American DE filter 48 sq ft , 3/4 HP WhisperFlo pump, 20 yr old pool Sylvan w/ attached spa , Polaris 280 cleaner w/ fine bag , bottom drain is pinched so using the skimmer only --TF-100 w/ SpeedStir

  14. Back To Top    #14

    In the Industry

    Donldson's Avatar
    Join Date
    Jun 2009
    Location
    NW Ohio
    Posts
    2,637

    Re: Chlorine armed robbery

    1) Ok for the reagents etc to go down the kitchen sink drain after use with the the tf-100 kit
    Not a problem.

    2) are there different levels of liquid chlorine which one should I use for the SLAM process and I am correct assuming only avail at the pool store ? I have used this product called " Austins Pool tech Shock -- 12.5% Sodium Hypochlorite "sold in 1 gallon containers before and have some in the pool closet.Not sure How much I will need to buy if my CYA is 60 and I have to get the shock level up to 24.
    You can use any type of liquid chlorine, including plain unscented bleach from the store. The one you are using now is fine, I don't know if best price but the product is just fine. Use the Pool Calculator to determine how much you need. Just make sure you put in the strength in the % field (ex. 12.5% for what you have, 6% or 8.25% for laundry aisle bleach).

    3. I have also developed a pool stain this year. My son poured some algiaecide into the pool back in may when it was chilly here in Philly and I noticed when they took the cover off there was a stain on the bowl of the pool I am assuming this is a different issue and can be addressed and wont be made worse with the SLAM process
    That I am not sure, if it was a copper based algaecide then it could be a copper stain. If you haven't had problems with it getting worse when you shocked before then you should be able to complete the SLAM process with no problem. After the SLAM we can help you out identifying it and removing it.
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
    Pool School - PoolMath - HIGHLY Recommended Test Kits

  15. Back To Top    #15

    Join Date
    Jun 2009
    Location
    Rockland County, NY
    Posts
    52

    Re: Chlorine armed robbery

    I purchased the same Austin's liquid shock a week ago at a local Christmas Tree Store, and discovered that the concentration listed did not coincide with my dosing and test results. I did not get the amount of free chlorine in the pool indicated by the pool calculator when dosing with the Austin's. I understand that the calculator is not precise, but having done this before with lower concentrations of Clorox brand, I know more or less what to expect. Looking at the date stamp on the bottle of the jug, it read, "13106"...so, I assume that would indicate a mfg date of Apr 16, 2013. More than three months from date of manufacture to use could be a factor in my results. Given that 12.5% chlorine has a half life (will lose half it's sodium hypochlorite concentration) of about 75 days at 90 degrees F (according to Richard's estimates), I should have been more diligent and closely checked the mfg. date stamp. Purchasing the higher concentrations of liquid chlorine would seem to put the consumer at a greater risk of buying a stale product resulting in inferior results. Also, not knowing the reputation of Austin's line, I would also put into question the overall stability of product.
    22,000 gallon ig vinyl solar heated (panels and cover) zeolite filtrate

  16. Back To Top    #16

    Join Date
    Jun 2013
    Location
    Fallsburg, NY
    Posts
    258

    Re: Chlorine armed robbery

    This is why it is often better to buy the 8.25% from the grocery store. It lasts longer under storage, and it turns over on the shelves more often so you tend to get fresher bottles. Therefore it is more predictable in strength. 12.5% may be more economical under certain circumstances, but it degrades faster and the locations that it is sold don't move as much inventory so it is likely to be sitting on shelves for a longer time.
    8638 gallon 20'x52" Intex ultra frame round AG. 2650 gph Intex Sand Filter. Intex krystal Klear SWG. (newer model that includes copper ion generation) Hayward 1091LX skimmer, Kreepy Krauly lil shark. Taylor K-2006 w/speed stir and sample sizer. New this year, Intex PureSpa - dichlor-> bleach method for sanitizing.
    New pool, 16'x36' (approx 18000 gal) in ground pool, Haywood DE filter

  17. Back To Top    #17

    Join Date
    Jul 2010
    Location
    Philly
    Posts
    332

    Re: Chlorine armed robbery

    AquaVita in Media has 12.5% liquid Chlorine at $18.60 for a 5 gallon carboy. That comes out to 23 cents per ounce of Chlorine. Aldi's bleach is about the same per ounce of Chlorine for $1.36 a 96 oz bottle. Those are the cheapest I've found in our area. I start the season off with the 12.5% and switch to regular Aldis' bleach once the water's balanced. Having a small pool I don't need that much after opening and can keep what I don't need cool in the basement.

    They also carry 31.45% Muriatic acid to lower PH. Home Depot etc. only carry the so called "safe" acid that's weaker and more expensive. Grab two or three 5 gallon carboys and start the SLAM process. You already have the best test kit around, access to relatively cheap Chlorine and the fine folks of this forum here to help. If your water is relatively clear now, you should have sparkling crystal clear water in no time. Once you've completed the SLAM process, your daily Chlorine demand will drop dramatically.
    Bill
    18'X4' 7600 Gal AG
    3/4 HP Pentair Pump
    Hayward S166T 100 lb sand filter

  18. Back To Top    #18

    Join Date
    Jun 2013
    Location
    media pa ( 20 miles south of philly)
    Posts
    17

    Re: Chlorine armed robbery

    yeggim -- thank you for the help and suggestion on where and what to buy . Im going to start the SLAM process over the weekend to give me time to run the tests. Ill post my results here .

    A bit chilly 61 degrees this am after high 90's all last week !
    28K gal, IG plaster, KDI - American DE filter 48 sq ft , 3/4 HP WhisperFlo pump, 20 yr old pool Sylvan w/ attached spa , Polaris 280 cleaner w/ fine bag , bottom drain is pinched so using the skimmer only --TF-100 w/ SpeedStir

  19. Back To Top    #19

    Join Date
    Jul 2010
    Location
    Philly
    Posts
    332

    Re: Chlorine armed robbery

    My pleasure juggler. I'd grab a gallon of Muriatic acid while you're there. With a TA of 140 your PH is likely to climb over time. Don't worry about it, just knock the PH down when it climbs to 7.8 and your TA will drop with each addition of acid. After a few additions of acid you'll want to test your TA again so PoolCalc will give you a more accurate recommendation.

    Go to PoolCalc and plug your test results in the "Now" column. At the bottom box make sure you have these checked and showing
    Use suggested goal levels from:TroubleFreePool.Com
    Primary source of chlorine: Bleach
    Pool surface: Plaster

    As for the SLAM, you have your CYA number and your PH is fine at 7.4. No need to test those again and the PH test will give an inaccurate high result when Chlorine is over 10ppm anyways.
    Bill
    18'X4' 7600 Gal AG
    3/4 HP Pentair Pump
    Hayward S166T 100 lb sand filter

  20. Back To Top    #20

    Join Date
    Jun 2013
    Location
    media pa ( 20 miles south of philly)
    Posts
    17

    Re: Chlorine armed robbery

    When running the oclt test overnight should filter be on or off
    28K gal, IG plaster, KDI - American DE filter 48 sq ft , 3/4 HP WhisperFlo pump, 20 yr old pool Sylvan w/ attached spa , Polaris 280 cleaner w/ fine bag , bottom drain is pinched so using the skimmer only --TF-100 w/ SpeedStir

Page 1 of 3 123 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
  •