Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 10 of 10

Thread: When is it safe to swim after chemicals have been added

  1. Back To Top    #1

    Join Date
    Oct 2011
    Location
    Mebane, NC
    Posts
    19

    When is it safe to swim after chemicals have been added

    This morning I started chlorine for the first time. Then I added some stablizer. Can't find an answer to this question: How long must my grandson wait to swim after these chemicals have been added?

    I love TFP! What a terrific place to get needed information! Thank you all so much!

    Billie
    20 x 40 IG 26,000 gal. vinyl
    Hayward sand filter S244T 62 GPM
    Hayward 2.0 hp Super Pump Mdl SP2615X20
    T-100 Kit
    Pool School

  2. Back To Top    #2
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
    Posts
    8,995

    Re: When is it safe to swim after chemicals have been added

    If you just "started" chlorine and didn't shock it...........give it a half hour and GO!............CYA doesn't matter.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

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

    Re: When is it safe to swim after chemicals have been added

    It is safe to swim up to the shock FC level for your CYA level.

    What CYA did you have before you added stabilizer?
    What was your target CYA?
    How much chlorine did you add ... to what target level?
    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

    Join Date
    Oct 2011
    Location
    Mebane, NC
    Posts
    19

    Re: When is it safe to swim after chemicals have been added

    [quote="jblizzle"]It is safe to swim up to the shock FC level for your CYA level.

    What CYA did you have before you added stabilizer? Zero
    What was your target CYA? 35
    How much chlorine did you add ... to what target level? 5

    Hi Jason - First spring to use pool. I was talked into EZPool by pool people but realized I would have to come out of retirement to afford it. So, today was the day to start BBB.

    I checked my pH - 7.5
    T/A - 80
    CH - 310

    I added 128 oz of bleach. An hour later I added 6# of Stabilizer. I checked for FC an hour or two later and it was 1.2. So, I added 128 oz more. I just checked it again, and it's back to ZERO!

    And:

    pH - 6.8
    T/A - 70
    CH - 270

    HELP!!!! Was it the stabilzer that changed these things?

    I've read that I'm supposed to take a deep breath and tackle one thing at a time. However, I'm not sure which to tackle because one thing changes another!

    It's 88 degrees here in NC and the sun seems to like my chlorine! Any help would be appreciated.
    20 x 40 IG 26,000 gal. vinyl
    Hayward sand filter S244T 62 GPM
    Hayward 2.0 hp Super Pump Mdl SP2615X20
    T-100 Kit
    Pool School

  5. Back To Top    #5
    XsAllOverIt's Avatar
    Join Date
    Dec 2010
    Location
    Mount Airy, Maryland
    Posts
    560

    Re: When is it safe to swim after chemicals have been added

    My guess is you have CC in your pool and will have to put the pool up to shock level until you rid the pool of CC. You will have to add chlorine regularly to keep it at shock level. Pool School has the details about the shocking process.
    18 x 36 Inground Gunnite, White Plaster 21K gallon
    18" raised spa, 8' Diameter (620 gallon)
    Triton II Sand filter, Intellichlor IC40 SWG
    Pentair Pump, Max-E-Therm 400 BTU
    Lamotte ColorQ PRO 7-Plus test kit
    TFT-100 test kit

  6. Back To Top    #6

    Join Date
    Oct 2011
    Location
    Mebane, NC
    Posts
    19

    Re: When is it safe to swim after chemicals have been added

    Quote Originally Posted by XsAllOverIt
    My guess is you have CC in your pool and will have to put the pool up to shock level until you rid the pool of CC. You will have to add chlorine regularly to keep it at shock level. Pool School has the details about the shocking process.
    Thank you for your guess. When the pool store analyzed my water on April 5, it had zero CC. Guess I'll have them do it again.

    This pool a new, all closed all winter and has only a few people in it since opened this spring. I'm mystified where the CC could have come from. I looked at the old tests and CC has always been zero.

    Does anyone else have a suggestion?
    20 x 40 IG 26,000 gal. vinyl
    Hayward sand filter S244T 62 GPM
    Hayward 2.0 hp Super Pump Mdl SP2615X20
    T-100 Kit
    Pool School

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

    Re: When is it safe to swim after chemicals have been added

    How does the water look?
    Do you have your own test kit? Pool store tests are notoriously wrong.

    CYA will take up to a week to show up in the test. For a 26k pool, 6# should give a CYA rise of 28ppm and will lower pH by 0.51 according to the poolcalculator.com. Did you use it to determine the amount to add?
    Because 128 oz of 6% bleach will only raise FC by 2.4ppm ... so that is not enough bleach to be adding.

    So, the CYA is probably why your pH dropped. Do you have a method to aerate the pool as that would raise the pH?

    Hard to say if the drop in FC is just due to the CYA not being effective yet or if there is some organic in the pool consuming it.

    Might be a good idea to follow Shocking Your Pool to make sure you start off on a good footing for the season.
    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
    linen's Avatar
    Join Date
    Jul 2010
    Location
    Twin Cities, MN
    Posts
    8,649

    Re: When is it safe to swim after chemicals have been added

    Jbliz beat me to it again ...here are my thoughts:

    Probably the best thing you can do for your pool is get yourself a good test kit. Running to the pool store is not only inefficient, but their results are often times incorrect. Just because you have no CC showing up in you test does not mean that you do not have something organic growing in your pool. With that said, since you just put cya in the pool (I am assuming you used the granular type?), it is not protecting your chlorine yet, so if you pool has a lot of sun that could account for some of the loss.

    How does your water look?

    Here is the link about appropriate test kits: http://www.troublefreepool.com/pool-...kit_comparison...I like the tf-100
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  9. Back To Top    #9

    In the Industry


    Join Date
    Feb 2012
    Location
    Phoenix, AZ
    Posts
    728

    Re: When is it safe to swim after chemicals have been added

    Quote Originally Posted by bjthon
    I checked my pH - 7.5
    T/A - 80
    CH - 310

    I added 128 oz of bleach. An hour later I added 6# of Stabilizer. I checked for FC an hour or two later and it was 1.2. So, I added 128 oz more. I just checked it again, and it's back to ZERO!

    And:

    pH - 6.8
    T/A - 70
    CH - 270
    Were both of these tests from a pool store? Like Jason said, pool stores tend to be inaccurate.
    The first thing I noticed was your CH. According to your results, CH went down by by 40. This really would only happen unless you replace water.
    I would highly recommend buying a good kit (like TF-100 from tftestkits.net), and learning to test water chemistry yourself. Once you get accurate readings, we can help you decide how to proceed. Like it says above, you should plan to shock your pool if you have more than one ppm of CC. Learning your current CYA will help you (and us) get the correct shock FC levels.

  10. Back To Top    #10

    Join Date
    May 2011
    Location
    Clearwater, FL.
    Posts
    446

    Re: When is it safe to swim after chemicals have been added

    Hi bjthon and welcome to TFP!
    I had the same problems with pool store being different every week and adding this, then need to do that this week.
    I was never comfortable in that I felt like I had any control to what was going to happen the next week.
    I Google'd water chemistry and landed here just over a year ago. After reading here I realized I would need my own testing kit. I did end up buying the TF100 kit, was the best value for me as I wanted a little larger kit than the K-2006 kit offered so I could test more to learn more about what I was doing.
    I posted my test results here and got a overwhelming amount of replies and help as a newbie.
    As I followed the methods taught here, my pool was perfect and well under control, so much I even had a few months it cost me under $15 per month! (except a broken $20 hose & elec)
    A Good testing kit is the Snap-on tool of this trade, it's clearly the best tool in my toolbox to fix and prevent any water problems I have so the grand kids can swim anytime except naptime, dinnertime and bedtime!

    Chuck
    Swim n Play 21' round, expandable 72" liner, 6FT deep center, buried 14", 12,750 Gallons
    Waterway 1HP-2 speed with 22" Sand filter
    TF-100 test kit
    Thanks to TFP my pool is perfect all the time :party:
    I now suffer from Sparklypoolitis! :whoot:
    I am a Platinum contributor because I want everyone who comes here to Trouble Free Pool to have the same success that I enjoy with my pool and family.

Posting Permissions

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