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Thread: Can I live with a TA of around 150?

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    Can I live with a TA of around 150?

    PH is currently 7.6. I understand that to lower TA I need to lower PH, however our fill water comes from a limestone water table, so I think I will be constantly increasing TA with every backwash and top up. Should I be constantly adding acid to get the TA down or can I just accept and live with it. I reckon the PH is going to keep going up, so I will have to add some acid anyway to keep it down to the recommended levels.
    400,000 Litre in ground infinity pool, with 40,000 litre holding tank (116 235.703 04 gallon). Vinyl liner.
    Two Astralpool Cantabric sand filters, 900mm diameter, each with 550kg of sand.
    Two ESI MP6 1.5kw 3 phase pumps.

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    Mod Squad jblizzle's Avatar
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    Re: Can I live with a TA of around 150?

    Accept it and just keep the pH in range. The TA may drop some, but it is not critical to try to get lower if the fill water is high.
    Jason, TFP Moderator
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    Re: Can I live with a TA of around 150?

    OK thanks. Calcium hardness is way up too, presumably for the same reason. Guess I will just have to live with that too.
    400,000 Litre in ground infinity pool, with 40,000 litre holding tank (116 235.703 04 gallon). Vinyl liner.
    Two Astralpool Cantabric sand filters, 900mm diameter, each with 550kg of sand.
    Two ESI MP6 1.5kw 3 phase pumps.

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    Butterfly's Avatar
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    Re: Can I live with a TA of around 150?

    How high is CH?
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    Re: Can I live with a TA of around 150?

    around 500
    400,000 Litre in ground infinity pool, with 40,000 litre holding tank (116 235.703 04 gallon). Vinyl liner.
    Two Astralpool Cantabric sand filters, 900mm diameter, each with 550kg of sand.
    Two ESI MP6 1.5kw 3 phase pumps.

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    Mod Squad jblizzle's Avatar
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    Re: Can I live with a TA of around 150?

    That is livable. You just need to keep closer tabs on the pH to prevent calcium scaling.

    Only way to lower the CH is through water replacement with lower CH 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
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    Richard320's Avatar
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    Re: Can I live with a TA of around 150?

    No. Your skin will peel off and you'll die a slow, agonizing death.

    Just kidding!

    You have it figured. Maintain pH and TA will slowly come down. Keep tabs on things and if CSI starts to climb, then you might have to take aggressive action to lower TA. Instructions are in Pool School.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Re: Can I live with a TA of around 150?

    OK thanks, check the PH pretty much daily anyway, so just keep introducing acid to keep the PH within range?
    400,000 Litre in ground infinity pool, with 40,000 litre holding tank (116 235.703 04 gallon). Vinyl liner.
    Two Astralpool Cantabric sand filters, 900mm diameter, each with 550kg of sand.
    Two ESI MP6 1.5kw 3 phase pumps.

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    Re: Can I live with a TA of around 150?

    Yes, just keep adding acid to keep the pH in range.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
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