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Thread: Holy Moly high CH!

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    Holy Moly high CH!

    I have not tested my CH in a long time, bad I know. Well I just tested and it's 800!

    FC 5
    CC 0
    Ph 7.8
    TA 70
    CYA 20 (taking it up to 40 tonight)

    If I keep my PH lowered to 7.2 - 7.4 should I be okay the rest of this season? I'm about to test my water straight from the tap to see what it tests. Stay tuned!
    21ft round Doughboy AG, 9,300 gallons
    22 inch ClearWater Sand Filter
    1 HP Hayward Power Flo Matrix Pump
    Install 6/16/13
    TF-100 Test Kit

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    Mod Squad jblizzle's Avatar
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    Re: Holy Moly high CH!

    Luckily your TA is not very high so that helps ... if you keep the pH below 7.8 you should be fine ... 7.4 would be around a neutral CSI.

    What is a long time? What did the CH used to be? You have not been using cal-hypo have you?
    Jason, TFP Moderator
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    pwrstrk's Avatar
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    Holy Moly high CH!

    Yes that's a bit high, but people have managed with even higher. The key is the PH as you seem to know.
    I know some people capture rain water or divert it into the pool to help out.
    Other people with more experience with high CH will chime in for ya. 😎
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: Holy Moly high CH!

    Now I'm wondering if I have ever tested it? I actually retested it and it's 900. My tap water measured 900 as well. So there's my answer. Should I try to lower my TA some more? I have to add MA every couple weeks cause my PH drifts up to 8.2 that should be lowering my TA a little right? Nothing goes in my pool except bleach or MA. I never need baking soda or borax. How low is too low for TA with my high CH?
    21ft round Doughboy AG, 9,300 gallons
    22 inch ClearWater Sand Filter
    1 HP Hayward Power Flo Matrix Pump
    Install 6/16/13
    TF-100 Test Kit

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    pwrstrk's Avatar
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    Holy Moly high CH!

    I would keep doing what your doing. Manage the PH. Adding acid every couple of weeks isn't that bad.
    Lower it when it gets to 7.8.
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Mod Squad jblizzle's Avatar
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    Re: Holy Moly high CH!

    I have to question whether that CH is right ... seems awfully high out of the tap. And the pool should be higher than the tap water due to evaporation.

    Review: http://www.troublefreepool.com/threa...l=1#post203523
    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
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    Richard320's Avatar
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    Re: Holy Moly high CH!

    900 CH from the tap should be obvious. You'll have thick white crust on all the faucets and showerheads , clogged up coffeemaker, and a ring around the toilet bowl. Even where I live, it's nowhere near that high. Are you on a well in Limestone country?

    Are you doing the CH test with 10 ml or 25 ml, and are you multiplying by the right factor? Next question: are you getting these results from manual swirling or using a speedstir? My CH reading dropped 200 just by switching to the speedstir which gives a better, longer mix time.

    If the CH is really and truly 900, you'll need to keep TA down in the 60-70 range and watch pH closely and actually pay attention to the CSI on poolmath. You want that below about .5.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Re: Holy Moly high CH!

    I filled cylinder to 25, not 10. Wish I would have to save regeants. I have a speed stir but didn't use it. Dropped 20 R-0010, 5 R-0011L, mixing between drops. It took 9 drops to turn blue. The 8th dropped turned purple. I have city water, not well. I'm going to retest with my speed stir. I'll be back folks!
    21ft round Doughboy AG, 9,300 gallons
    22 inch ClearWater Sand Filter
    1 HP Hayward Power Flo Matrix Pump
    Install 6/16/13
    TF-100 Test Kit

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    Mod Squad jblizzle's Avatar
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    Re: Holy Moly high CH!

    That is a CH of 90 ... not 900
    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

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    Re: Holy Moly high CH!

    Okay. Wow! I used the speed stir and got 400. I cannot believe the difference that made in testing. I will use it for every single test now. I feel like an idiot, lol! Oh well I'm glad it's not 900. Thanks for the help everyone.

    Guess I'm a horrible mixer. Off to retest everything else now!

    - - - Updated - - -

    Oh my gosh! You're right! I'm quitting for the day! I'm losing it! You're all welcome for the laughs.
    21ft round Doughboy AG, 9,300 gallons
    22 inch ClearWater Sand Filter
    1 HP Hayward Power Flo Matrix Pump
    Install 6/16/13
    TF-100 Test Kit

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