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Thread: New Pool New to TFP

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    Angry New Pool New to TFP

    I am struggling. I can't seem to raise my chlorine and my ph is just rising. I have the TF100 test kit.

    FC is .5 maybe
    PH is 8 and rising.
    TA is 120
    CYA is undetermined. Because I can't make the black dot disappear no matter what!

    I have used pool math and added so far 4 gallons of 8.25 bleach. How am I going to get the CYA to move with this chlorine if I don't have any?
    30' Round Whispering Wind AG that is in ground (23300 gallons). Pentair Sand Dollar 19" Sand Filter with 2 Speed 1-1/2hp Dynamo Pump. Full sun and tf-100 test kit.

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    Donldson's Avatar
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    Re: New Pool New to TFP

    Welcome to TFP!

    If the black dot doesn't disappear then you don't have any. What does your CC test show?

    I don't understand what you are saying in the last sentence. Bleach doesn't add CYA, nor does the FC level affect the CYA test.
    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

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    Re: New Pool New to TFP

    Welcome to the forum
    Your post is a little confusing.

    What does your water look like? Have you read "The "ABC's of Pool Water Chemistry" up in Pool School? Where is Silver Creek? AZ? FL? MI?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad Jimrahbe's Avatar
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    Re: New Pool New to TFP

    Billy,

    Welcome to TFP... A Great resource for all new TF-100 users...

    When the dot does not disappear, that is an indication that there is no CYA in the water.

    If this is a new pool, then it would appear that none was added by the Pool Builder.

    Without CYA, the pool will consume your chlorine/bleach at a pretty good rate, so that could be why you can't keep chlorine in the water.

    It could also be that something is growing in the water and chlorine is just doing its job.

    What does your water look like?

    You say you have used 4 gallons of bleach, but you did not say over what period of time? What FC level are you trying to target, and how long after adding the bleach are you testing?

    I suggest that you add CYA to your pool using pool math... Should need about 88 oz to bring you CYA up to 30 ppm

    Thanks for posting,

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

  5. Back To Top    #5

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    Re: New Pool New to TFP

    Cc is 0.

    - - - Updated - - -

    My water is clear. I have read the ABC 's and that why I can't understand why the chlorine won't raise at all while PH IS climbing. Silver Creek is in GA.
    30' Round Whispering Wind AG that is in ground (23300 gallons). Pentair Sand Dollar 19" Sand Filter with 2 Speed 1-1/2hp Dynamo Pump. Full sun and tf-100 test kit.

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    triptyx's Avatar
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    Re: New Pool New to TFP

    Ok, there are two....three different problems here.

    Problem #1: With no CYA, the sun is going to burn off that chlorine very quickly. If you haven't had enough chlorine in the pool, it's also possible that there is algae that is also consuming the chlorine. CCs burn off pretty quickly in the sun, it's possible that you're having an early stage algae problem even with 0CC.
    Problem #2: pH is rising. Through splashing, the surface being rippled, etc. the pH will tend to rise over time. This is perfectly normal, and you will need to add muriatic acid from time to time to lower the pH to the correct range. The TA of 120 may be allowing this rise to happen faster than it would with a lower TA.
    Problem #3: You have little to no CYA. You'll want to get some granular CYA from WalMart or another of your favorite stores and get that in. Use PoolMath to calculate what it would take to go from 0 to 30 CYA with your 22,000 gallon pool. If you want, we can check your math - tell us what you plan to add and we'll help you make sure it's correct.

    Fixing the CYA will reduce the effects of the sun on the Chlorine. Once the CYA is set, you can perform an Overnight Chlorine Loss test and figure out if there is something else causing the free chlorine to leave the pool. We're here to help you every step.
    8,500gal plaster in-ground with attached spa, two floor drains, one skimmer. Chlorine, City Water.
    Pentair WhisperFlo 1hp Pump, MagnaTek Midcentury EPlus motor, Pentair CleanNClear 200SF Cartridge filter, Purex Triton MiniMax 250 Gas Heater, Pentair SunLite, AutoFill.
    Kreepy Krauly Cruiser, TF-100 with SpeedStir. :D

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    Re: New Pool New to TFP

    Thank you Jim! I am the pool builder. So no it wasn't added. The water is crystal clear! So that's good. Bleach has been added over 1 week time. I will stabilizer. Thank you again!!
    30' Round Whispering Wind AG that is in ground (23300 gallons). Pentair Sand Dollar 19" Sand Filter with 2 Speed 1-1/2hp Dynamo Pump. Full sun and tf-100 test kit.

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    Re: New Pool New to TFP

    Thank you. I will get stabilizer asap! Pool math says 84 oz of stabilizer. I appreciate your help so much!
    30' Round Whispering Wind AG that is in ground (23300 gallons). Pentair Sand Dollar 19" Sand Filter with 2 Speed 1-1/2hp Dynamo Pump. Full sun and tf-100 test kit.

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    Re: New Pool New to TFP

    Don't forget not to pour the CYA into the skimmer.

    From Pool School - Recommended Pool Chemicals
    Solid/granular cyanuric acid (CYA) should be placed in a sock and the sock put in the skimmer basket or suspended in front of a pool return. After adding CYA you should leave the pump running for 24 hours and not backwash/clean the filter for a week. Squeezing the sock periodically will help it to dissolve faster. Test and dose chemicals in your pool assuming the amount of CYA added is in the pool according to Poolmath. CYA can be tested the day after it is fully dissolved from the sock.


    I'm getting 88oz of CYA to target 30ppm for a 22,000 gallon pool. Double check your numbers if you would, though it's better to undershoot than overshoot - you can always add a little more, but have to remove water to lower it.
    8,500gal plaster in-ground with attached spa, two floor drains, one skimmer. Chlorine, City Water.
    Pentair WhisperFlo 1hp Pump, MagnaTek Midcentury EPlus motor, Pentair CleanNClear 200SF Cartridge filter, Purex Triton MiniMax 250 Gas Heater, Pentair SunLite, AutoFill.
    Kreepy Krauly Cruiser, TF-100 with SpeedStir. :D

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