Become a TFP Supporter Pool Math Forum Rules Pool School
Page 1 of 2 12 LastLast
Results 1 to 20 of 27

Thread: Opening Numbers, pH-TA, Chlorine questions

  1. Back To Top    #1

    Join Date
    Apr 2012
    Location
    Chicagoland
    Posts
    15

    Opening Numbers, pH-TA, Chlorine questions

    First, thanks to the great forum here and all the advice I've gained by searching.

    I have recently opened and need a second opinion on my numbers. Pool is ~25k gallon inground plaster and connected hot tub.

    Using Taylor K2006 today numbers are:

    pH 7
    CYA <30
    TA 160
    FC 12.5
    CC 1.5
    C.H. 300

    I have dumped tons of clorox in to open and am still surprised how quickly FC drops. I know CYA is low, but is always covered. Is the cover also a reason for the lower pH and high TA? Do I need to adjust this?

    Currently I am floating Trichlor, figured with the low CYA I would continue and pull as it starts to register on CYA and go BBB from there.

    I seemed to REALLY battle keeping FC up last year so I want to make sure I am starting out ok.

    Any comments are welcome, thank you!

    D
    25k gal plaster IG w/spa
    Paramount infloor cleaner system
    Centurion 1 H.P. main pump
    Centurion 2.0 H.P spa jet booster pump
    Centurion 1.5 H.P infloor cleaner pump
    Raypak 2100 digital gas heater
    STA-RITE System 3 cartridge filter
    Coverstar auto undermount cover
    Jandy Aqualink RS8 pool/spa controler

  2. Back To Top    #2
    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    Location
    SW Indiana
    Posts
    9,086

    Re: Opening Numbers, pH-TA, Chlorine questions

    Welcome to TFP!

    Is your chlorine ever dropping near zero before your next addition? If so, this will prolong your battle. Normally hitting it really hard and checking every few hours for about a day will really reduce the chlorine consumption.

    Uncovering the pool will allow sunlight to get rid of your CC.

    Don't trust your pH reading with high chlorine levels. Wait until the chlorine is at normal levels to mess with pH.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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

    Re: Opening Numbers, pH-TA, Chlorine questions

    Welcome

    +1 to what John said.

    It does not sound like you are following the shock process and are just dumping in chlorine. Read Shocking Your Pool in Pool School.

    We believe in only adding what the pool NEEDS and to do that you need frequent testing and accurate dosing based on the poolcalculator.com

    The trichlor will add CYA, although if you are very low with your CYA level, you may be loosing a lot of the FC to the sun (the cover helps some, but also does not allow the CCs to be broken down as well).

    If you are battling to hold FC levels up, either your CYA was too low and you were loosing it to the sun OR you had something growing somewhere using up your FC.
    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
    Apr 2012
    Location
    Chicagoland
    Posts
    15

    Re: Opening Numbers, pH-TA, Chlorine questions

    Thanks for the replys, I was thinking of checking Cl tonight and again in the morning to get better quantitative data (actual loss) and then go from there. Is that a reasonable approach?...As you are correct I've been all over the road, just got the K-2006 test kit which makes me feel much better about the data I am now collecting.
    25k gal plaster IG w/spa
    Paramount infloor cleaner system
    Centurion 1 H.P. main pump
    Centurion 2.0 H.P spa jet booster pump
    Centurion 1.5 H.P infloor cleaner pump
    Raypak 2100 digital gas heater
    STA-RITE System 3 cartridge filter
    Coverstar auto undermount cover
    Jandy Aqualink RS8 pool/spa controler

  5. Back To Top    #5
    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    Location
    SW Indiana
    Posts
    9,086

    Re: Opening Numbers, pH-TA, Chlorine questions

    Check hourly when you can until you see how much it's dropping. Then go to every 4 hours. When it makes it through 4 hours with only a little drop, back off to 8 hours.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

  6. Back To Top    #6

    Join Date
    Apr 2012
    Location
    Chicagoland
    Posts
    15

    Re: Opening Numbers, pH-TA, Chlorine questions

    Ok thanks will collect the data and report back...leave uncovered?
    25k gal plaster IG w/spa
    Paramount infloor cleaner system
    Centurion 1 H.P. main pump
    Centurion 2.0 H.P spa jet booster pump
    Centurion 1.5 H.P infloor cleaner pump
    Raypak 2100 digital gas heater
    STA-RITE System 3 cartridge filter
    Coverstar auto undermount cover
    Jandy Aqualink RS8 pool/spa controler

  7. Back To Top    #7
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: Opening Numbers, pH-TA, Chlorine questions

    I think you are talking about doing an OCLT? Sure, you can do that if you want, but it is usually done as one of the three criteria to confirm when you are done shocking.

    In the interim, you should follow the advice given above from John & Jason and test often and follow the shock process in Pool School.

    Leave uncovered during the day so the sun can help eat the CC's.

    Welcome to the forum
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  8. Back To Top    #8

    Join Date
    Apr 2012
    Location
    Chicagoland
    Posts
    15

    Re: Opening Numbers, pH-TA, Chlorine questions

    Noon FC = 12.5 CC = 1.5
    3pm = FC = 11
    4pm = FC = 9.5 CC = 1
    25k gal plaster IG w/spa
    Paramount infloor cleaner system
    Centurion 1 H.P. main pump
    Centurion 2.0 H.P spa jet booster pump
    Centurion 1.5 H.P infloor cleaner pump
    Raypak 2100 digital gas heater
    STA-RITE System 3 cartridge filter
    Coverstar auto undermount cover
    Jandy Aqualink RS8 pool/spa controler

  9. Back To Top    #9
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Opening Numbers, pH-TA, Chlorine questions

    Quote Originally Posted by dpatti1
    Noon FC = 12.5 CC = 1.5
    3pm = FC = 11
    4pm = FC = 9.5 CC = 1
    Are you shocking or just measuring??? If you are shocking, you are suppose to raise the FC back up to >12ppm (based on CYA of 30) every time you test.

    Read the Pool School article in my first post.
    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!

  10. Back To Top    #10

    Join Date
    Apr 2012
    Location
    Chicagoland
    Posts
    15

    Re: Opening Numbers, pH-TA, Chlorine questions

    No just measuring, the CYA does not measure, low end on the test kit is 30 so it is obviously below 30.
    25k gal plaster IG w/spa
    Paramount infloor cleaner system
    Centurion 1 H.P. main pump
    Centurion 2.0 H.P spa jet booster pump
    Centurion 1.5 H.P infloor cleaner pump
    Raypak 2100 digital gas heater
    STA-RITE System 3 cartridge filter
    Coverstar auto undermount cover
    Jandy Aqualink RS8 pool/spa controler

  11. Back To Top    #11

    Join Date
    Apr 2012
    Location
    Chicagoland
    Posts
    15

    Re: Opening Numbers, pH-TA, Chlorine questions

    Yes read the instructions and the CYA/FC balance charts etc. Since its dropping I need to add according to the guides, but this is what is frustrating me, I feel like I need a faucet supplying chlorine. Or rent a truck to pick up a skid of clorox at Costco. The water looks only very slightly dull btw.
    25k gal plaster IG w/spa
    Paramount infloor cleaner system
    Centurion 1 H.P. main pump
    Centurion 2.0 H.P spa jet booster pump
    Centurion 1.5 H.P infloor cleaner pump
    Raypak 2100 digital gas heater
    STA-RITE System 3 cartridge filter
    Coverstar auto undermount cover
    Jandy Aqualink RS8 pool/spa controler

  12. Back To Top    #12
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Opening Numbers, pH-TA, Chlorine questions

    Dropping pretty fast. Either you have something organic consuming your FC or the sun it knocking it out or both.

    I would recommend adding some CYA separately as the pucks are not going to add it fast enough until you can measure it and then shock the pool to make sure nothing is living in it.

    Or you can just continue to have bleach and wait for the pucks to register. For reference, each puck is adding 2.2ppm FC and 1.3ppm CYA ... it may take a lot of pucks to get up to 30+ if you are near zero.
    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!

  13. Back To Top    #13

    Join Date
    Apr 2012
    Location
    Chicagoland
    Posts
    15

    Re: Opening Numbers, pH-TA, Chlorine questions

    Yeah I'll definately add some CYA.

    Pool is always covered today I am leaving open to try to burn cc off, but even when covered the FC drops fairly quick.

    I really appreciate the comments and support.
    25k gal plaster IG w/spa
    Paramount infloor cleaner system
    Centurion 1 H.P. main pump
    Centurion 2.0 H.P spa jet booster pump
    Centurion 1.5 H.P infloor cleaner pump
    Raypak 2100 digital gas heater
    STA-RITE System 3 cartridge filter
    Coverstar auto undermount cover
    Jandy Aqualink RS8 pool/spa controler

  14. Back To Top    #14
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Opening Numbers, pH-TA, Chlorine questions

    Quote Originally Posted by dpatti1
    Yeah I'll definately add some CYA.
    Add less than you think you need so you do not overshoot too bad ... no way to lower it besides replacing water.
    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!

  15. Back To Top    #15

    Join Date
    Apr 2012
    Location
    Chicagoland
    Posts
    15

    Re: Opening Numbers, pH-TA, Chlorine questions

    Understood, I'll be careful with the addition.
    25k gal plaster IG w/spa
    Paramount infloor cleaner system
    Centurion 1 H.P. main pump
    Centurion 2.0 H.P spa jet booster pump
    Centurion 1.5 H.P infloor cleaner pump
    Raypak 2100 digital gas heater
    STA-RITE System 3 cartridge filter
    Coverstar auto undermount cover
    Jandy Aqualink RS8 pool/spa controler

  16. Back To Top    #16

    Join Date
    Apr 2012
    Location
    Chicagoland
    Posts
    15

    Re: Opening Numbers, pH-TA, Chlorine questions

    I'm really about to give up. I've actually had the pool for 6 years and never had this problem.
    FC
    18-Apr Noon 12.5
    18-Apr 3:00 AM 11
    18-Apr 4:00 AM 9.5
    18-Apr 5:00 AM 9 Added 2 182 oz bottles 6% clorox
    18-Apr 8:00 PM 17 cc=1
    18-Apr 8:30 PM Hung 4lbs CYA
    19-Apr 9:00 AM 11 cc=1

    Ugh!!!
    25k gal plaster IG w/spa
    Paramount infloor cleaner system
    Centurion 1 H.P. main pump
    Centurion 2.0 H.P spa jet booster pump
    Centurion 1.5 H.P infloor cleaner pump
    Raypak 2100 digital gas heater
    STA-RITE System 3 cartridge filter
    Coverstar auto undermount cover
    Jandy Aqualink RS8 pool/spa controler

  17. Back To Top    #17

    Join Date
    Jun 2011
    Location
    Long Beach, CA
    Posts
    2,669

    Re: Opening Numbers, pH-TA, Chlorine questions

    You definitely have organics in your water and they are consuming your chlorine. Keep your FC above 12 at all times and you will kill everything off. When the FC drops below shock level the organics make a comeback and you fall behind.

    Make sure you are brushing the entire pool at least once a day and keep the pump running 24/7.

    You will be finished shocking the pool only when you pass the OCLT, the CC is .5 or less, and the water is clear.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

  18. Back To Top    #18

    Join Date
    Apr 2012
    Location
    Chicagoland
    Posts
    15

    Re: Opening Numbers, pH-TA, Chlorine questions

    FC
    18-Apr Noon 12.5
    18-Apr 3:00 PM 11
    18-Apr 4:00 PM 9.5
    18-Apr 5:00 PM 9 Added 2 182 oz bottles 6% clorox
    18-Apr 8:00 PM 17 cc=1
    18-Apr 8:30 PM Hung 4lbs CYA
    19-Apr 9:00 AM 11 cc=1

    My times were off on a couple (had am instead of pm). But yes, dropped from 17 to 11 overnight. The water is the clearest it has been in a week this morning. I will try one more time, going to costco to by cases of bleach (again) and will make sure to be >12 at all times.

    Now might be the time for the rest of you to quickly grab some shares clorox (NYSE: CLX) stock.
    25k gal plaster IG w/spa
    Paramount infloor cleaner system
    Centurion 1 H.P. main pump
    Centurion 2.0 H.P spa jet booster pump
    Centurion 1.5 H.P infloor cleaner pump
    Raypak 2100 digital gas heater
    STA-RITE System 3 cartridge filter
    Coverstar auto undermount cover
    Jandy Aqualink RS8 pool/spa controler

  19. Back To Top    #19
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: Opening Numbers, pH-TA, Chlorine questions

    Hey d, now would be a good time for you to add your pool and equipment specs to your sig .
    Go to User Control Panel (upper left under TFP logo), select Profile, then Edit Sig.

    btw, if it was my pool (plaster, too), I'd raise the shock to 20 FC tonight.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  20. Back To Top    #20

    Join Date
    Apr 2012
    Location
    Chicagoland
    Posts
    15

    Re: Opening Numbers, pH-TA, Chlorine questions

    Up over 20 will maintain the level...
    25k gal plaster IG w/spa
    Paramount infloor cleaner system
    Centurion 1 H.P. main pump
    Centurion 2.0 H.P spa jet booster pump
    Centurion 1.5 H.P infloor cleaner pump
    Raypak 2100 digital gas heater
    STA-RITE System 3 cartridge filter
    Coverstar auto undermount cover
    Jandy Aqualink RS8 pool/spa controler

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
  •