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Thread: No free Chlorine

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    No free Chlorine

    hey, I just found this site! my pool stays open year round. I let it get out of hand and was needing to get it back under control. The readings were FC 1.1,- TC 8.3,- CC 7.2,- PH 7.2 - TA 90, - CH 333, - CYA 10 - Clear Water, have a few pounds of grandleur shock left before trying the liquid method, need help, do I need to add a lot of chlorine shock at one time or gradually add it, like 2 lbs. a day until I get free Chlorine level to hold. I was getting like a chlorine demand last year and drained pool. don't really want to keep going that route anymore. Thanks in advance for any help you can give me. I'm from South Carolina and it is a older pool.
    26,260 gals. Gunite, IG, TA60 Sand Filter, 1HP, 3450 rpm's, 60 13.6 gpm. 25 year old pool

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    JasonLion's Avatar
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    Re: No free Chlorine

    Welcome to TFP!

    You want to shock the pool, which means adding enough chlorine to raise the FC level to around 10, let it mix for an hour or more, and repeat as frequently as practical and at least twice a day until the FC level remains the same (or +-0.5) overnight.

    What are you using to get your test results?
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    frustratedpoolmom's Avatar
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    Re: No free Chlorine

    What is the granular shock? Can you tell us the active ingredient?
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Re: No free Chlorine

    Thanks for the welcome! I got them from the local pool store on the 9th and will be converting over to bleach .as soon as I get my new test kit from TFP and just trying to be getting pool closer in line while i"m learning and waiting. Just found this site and man i'm trying to read every few minutes i get free. also I'm using up the 68% calcium hypochlorite, 65% chlorine for shock starting today.
    26,260 gals. Gunite, IG, TA60 Sand Filter, 1HP, 3450 rpm's, 60 13.6 gpm. 25 year old pool

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    frustratedpoolmom's Avatar
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    Re: No free Chlorine

    Honestly, I suggest you don't use it - it's Cal-Hypo and will raise your Calcium Hardness level which is already at the high end of the scale. I would stick to bleach, or see if they will exchange the shock for "Dichlor" shock instead - that will increase your CYA level, which at 10 - is too low. You want it to be at about 50.

    We can tell how much Dichlor to add if they will exchange it for you. We can teach you how to use The Pool Calculator, which helps you calculate the dosing of each chem, how much to add and when.

    If they won't take it back, just hold on to the cal-hypo for future use. But you'll need to buy CYA/Stabilizer separately, or Dichlor Shock. Hope that makes sense, post back if this is not clear.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Re: No free Chlorine

    Thanks pool Mom, I appreciate the advice and won't use the shock! Tomorrow after work, I will go to rounding up some bleach to start the conversion. I will take a water sample to get it tested for more correct readings and spend the weekend trying to get it back right. I am ordering a new test kit but can't want to wait to get started. the water is crystal clear but it has not been stirred up in a couple days and where i WAS using the hypochlorite, it is laying on the bottom. I'll start brushing, vaccuming, backwashing and get started from scratch. Thanks again PoolMom.
    26,260 gals. Gunite, IG, TA60 Sand Filter, 1HP, 3450 rpm's, 60 13.6 gpm. 25 year old pool

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    frustratedpoolmom's Avatar
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    Re: No free Chlorine

    Stirred up? Your filter is running, correct?
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Melt In The Sun's Avatar
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    Re: No free Chlorine

    Sounds like cal-hypo was sitting on the bottom for a couple days...good thing you don't have a vinyl pool!
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
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    Re: No free Chlorine

    YES, you are both correct! it was a bad choice of words for me. The pump is running and water is clear but the granular has been laying on the bottom for a couple of days but I will vacuum it to waste tomorrow. THANKS
    26,260 gals. Gunite, IG, TA60 Sand Filter, 1HP, 3450 rpm's, 60 13.6 gpm. 25 year old pool

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    Re: No free Chlorine

    Hey Ghost...
    poolmom has been very helpful on my thread...starts '7 year itch...'
    Lots of the info she's given may help you on your quest. I ask a LOT of questions so there may be something you can use.

    Good luck...
    Backyard pool-less, but used to be.....
    16,100 gallon, 18x38 3.5 ft deep oval AG, Vinyl, Sand, 1hp pump
    http://www.poolservicestech.com Liquidator
    http://www.poolcalculator.com/
    http://www.tftestkits.net TFT100 test kit

  11. Back To Top    #11

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    Re: No free Chlorine

    Quote Originally Posted by GHOST
    YES, you are both correct! it was a bad choice of words for me. The pump is running and water is clear but the granular has been laying on the bottom for a couple of days but I will vacuum it to waste tomorrow. THANKS
    Ghost; Unless you dumped 10 pounds of the "shock" in the pool (cal-hypo) it'll dissolve rapidly as long as there is circulation.
    -Don't vacuum it to waste, just vacuum into the sand filter. Then it'll dissolve in the water as the filter runs.

    You have to get stabilizer into the water immediately. You loose chlorine to the sunshine in SC fast without it!

    a) Add chlorine and bring the water up to shock level; 6% bleach works best. Keep the packets of cal-hypo for emergencies.
    -Remember that 'shock' is a verb; it's what you do to the water.

    b) Add stabilizer (you can buy it at most wal-mart's in 3# containers).
    Remember that it takes up to a week to dissolve so you don't want to backwash until it's in the water.

    Enjoy yourself while you learn about how your water reacts as you add chemicals (BBB). By mid summer you will learn to anticipate changes in the water due to parties, etc. and you will be 'pre-treating' the water so that it stays under control.

    Terry in NC
    Triad Region of NC
    18x37 Vinyl IG (24,000 gal.), BBB & GoldLine AquaLogic PS4 SWG, Hayward 1 HP Superpump / Hayward Sand Filter / Polaris 280 cleaner / 6 deck jets / Sheer Descent Waterfall (in coping) / Brick Red Concrete Coping / Stamped Concrete Deck
    Lots of oak trees, maple trees, *and* leaves!

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    Re: No free Chlorine

    Hey all Thanks for the info. Sorry I'm just now getting back to the pool. (had a family emergency), Terry, I started with the chemicals tonight and will post results later. Thanks for the advice. Poolgirl, i read your thread and it was very helpfull and you were right, i had some of the same problems and now maybe I will get it straighten out. PoolMom, I'm reading and learning every chance i get. This is a great site.
    26,260 gals. Gunite, IG, TA60 Sand Filter, 1HP, 3450 rpm's, 60 13.6 gpm. 25 year old pool

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    Re: No free Chlorine

    Just following up from earlier post. water is clear, trying the overnight chlorine test tonight. in the last 5 hours chlorine is holding high, best as i can tell using old test kit. (new one is on order) have been doing alot of reading and cleaning up the pool. so far so good!
    26,260 gals. Gunite, IG, TA60 Sand Filter, 1HP, 3450 rpm's, 60 13.6 gpm. 25 year old pool

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    Re: No free Chlorine

    Quote Originally Posted by GHOST
    ...water is clear, trying the overnight chlorine test tonight...new test kit is on order...so far so good!
    Please keep us posted with the numbers!
    I like the "water is clear" comment... Now, is it sparkling yet?
    -Terry in NC
    Triad Region of NC
    18x37 Vinyl IG (24,000 gal.), BBB & GoldLine AquaLogic PS4 SWG, Hayward 1 HP Superpump / Hayward Sand Filter / Polaris 280 cleaner / 6 deck jets / Sheer Descent Waterfall (in coping) / Brick Red Concrete Coping / Stamped Concrete Deck
    Lots of oak trees, maple trees, *and* leaves!

  15. Back To Top    #15

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    Re: No free Chlorine

    Yes, it's sparkling now! but, I can't post the numbers yet because the test kit won't get here till tomorrow. Thanks for asking Terry, I was getting frustrated before finding this pool site now I'm excited about getting it back under control again. The weather is really warming up here in SC now so it won't be long now. will post as soon as the test kit gets here.
    26,260 gals. Gunite, IG, TA60 Sand Filter, 1HP, 3450 rpm's, 60 13.6 gpm. 25 year old pool

  16. Back To Top    #16

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    Re: No free Chlorine

    I received the test kit today and learning! Total Chlorine 14 , CC 2.5 , Free Chlorine 11.5 , PH 7.4 , CYA 30 but couldn't get the alkalinity or the calcium hardness test to work right, tried twice and kept counting the drops but wouldn't change colors. will try again tomorrow.
    26,260 gals. Gunite, IG, TA60 Sand Filter, 1HP, 3450 rpm's, 60 13.6 gpm. 25 year old pool

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    Richard320's Avatar
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    Re: No free Chlorine

    Quote Originally Posted by GHOST
    I received the test kit today and learning! Total Chlorine 14 , CC 2.5 , Free Chlorine 11.5 , PH 7.4 , CYA 30 but couldn't get the alkalinity or the calcium hardness test to work right, tried twice and kept counting the drops but wouldn't change colors. will try again tomorrow.
    You probably have high numbers and gave up, or it faded out. Use the search function for fading endpoints, you find lots of how-to. Also note that you can use a smaller sample - 10 ml instead of 25 - to conserve reagent and save time. Not as precise, but is there really that much difference between 925 and 950?
    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!

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    frustratedpoolmom's Avatar
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    Re: No free Chlorine

    When you do the TA test - wipe the tip of the dropper bottle with a damp cloth in between drops.

    From the Taylor site for CH:
    Calcium Hardness Test

    1. Rinse and fill large comparator tube to 25 mL mark with water
    to be tested.*

    2. Add 20 drops R-0010. Swirl to mix.

    3. Add 5 drops R-0011L. Swirl to mix. If calcium hardness is
    present, sample will turn red.

    4. Add R-0012 dropwise. After each drop, count and swirl
    to mix until color changes from red to blue.

    5. Multiply drops in Step 4 by 10. Record as parts per million
    (ppm) calcium hardness as calcium carbonate.

    * When high CH is anticipated, this procedure may be used: Use
    10 mL sample, 10 drops R-0010, 3 drops R-0011L, and multiply
    drops in Step 4 by 25.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  19. Back To Top    #19

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    Re: No free Chlorine

    Hi yall, from the Ghost! tonight results are FC- 15.5 , CC- 1.5 , TC- 17 , PH- 7.5 , TA- 200 , CH- 290 , CYA- 20 I added some stablizer 3lb. in a sock in the skimmer. I appreciate all the help and finally got the TA and CH figured out with all of your help. I will test again tomorrow
    26,260 gals. Gunite, IG, TA60 Sand Filter, 1HP, 3450 rpm's, 60 13.6 gpm. 25 year old pool

  20. Back To Top    #20
    frustratedpoolmom's Avatar
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    Re: No free Chlorine

    When you are done shocking we are going to discuss your high TA.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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