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Thread: PAC can this be used in Pools?

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    PAC can this be used in Pools?

    Iv just been told of a floc which works better than Alumn known as PAC. Got to see the contents looked something like curry powder and brown slurry when mixed with water.... is this safe to use in pools and how does it compare to aluminum sulfate, i am being told its a better product. Can anyone explain?
    27,500gal IG plaster that needs recoating/painting!, Pentair Whisper-flo 1hp 2 speed, 48sf DE, Pentair Legend II pressure-side cleaner, BBB newbie

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    JasonLion's Avatar
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    Re: PAC can this be used in Pools?

    PAC is polyaluminum chloride. Since it starts as a larger molecule, it is said to work more quickly than aluminum sulfate (6 hours vs 12-18 hours). Since the need to use of any kind of floc is extremely rare when following our recommendations, I don't have enough experience with it to comment on how it compares in practice.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: PAC can this be used in Pools?

    It seems to be widely reported that about 80% of the chlorine used in your pool is used for oxidising bather waste compaired to 20% used for actually sanitising. Therefore if you remove the organics and bather waste by floculation it would reduce the chlorine usage. That's the theory but as Jason will tell you his chlorine usage figures are already very low so it may not be required unless you have clarity problems, do you?

    If there are problems whether it is cheaper to use DE or Floc you will need to work out

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    Re: PAC can this be used in Pools?

    Wanted to know if PAC is actually suitable for pools, seems very different from Alum iv used before. The solution that comes out PAC mixture is coffee colour and im having doubts if this is suitable.....

    DE of course would be better however it is not availble were i live.
    27,500gal IG plaster that needs recoating/painting!, Pentair Whisper-flo 1hp 2 speed, 48sf DE, Pentair Legend II pressure-side cleaner, BBB newbie

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    Re: PAC can this be used in Pools?

    sorry, short answer, yes.
    It will also lower some phosphate levels, personally I think it is better than DE.

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    Re: PAC can this be used in Pools?

    PAC may remove small physical particles and dead algae, but it may not actually remove bather waste chemicals such as monochloramine (formed from ammonia combining with chlorine) and urea or chlorourea. Even if it did move these to the filter, chlorine would still react with it unless you were to backwash to remove it.

    Most chlorine loss in outdoor residential pools is due to the UV in sunlight, not from bather load. It is only in moderate-to-high bather load situations, such as in commercial/public pools, where the largest chlorine demand is bather load.
    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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    Re: PAC can this be used in Pools?

    PAC shouldnt discolour my water right? And is there any dosing guide, how muchs hould i be using per 10,000 gallons of water?
    27,500gal IG plaster that needs recoating/painting!, Pentair Whisper-flo 1hp 2 speed, 48sf DE, Pentair Legend II pressure-side cleaner, BBB newbie

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    Re: PAC can this be used in Pools?

    To give you an update, I have had alot better results using PAC than Alumn so if any of you were considering I strongly recommend sticking with PAC.
    27,500gal IG plaster that needs recoating/painting!, Pentair Whisper-flo 1hp 2 speed, 48sf DE, Pentair Legend II pressure-side cleaner, BBB newbie

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    QUick Questions on PAC

    Merged topics to maintain history. Butterfly

    Does anyone know if overdosing with PAC will cause the water to cloud?

    - I have been able to maintain crystal clear water with PAC for the past couple of weeks, with the exception of last week when i had folks coming over i noticed slight clouding and so happened to double dose PAC and seems that the situation has gotten worse afterwards.

    - All chem levels are within range.

    Input appreciated.
    27,500gal IG plaster that needs recoating/painting!, Pentair Whisper-flo 1hp 2 speed, 48sf DE, Pentair Legend II pressure-side cleaner, BBB newbie

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    JasonLion's Avatar
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    Re: PAC can this be used in Pools?

    If everything was working correctly, the water wouldn't get cloudy in the first place. PAC treats the symptoms, not the cause. You need to figure out what is causing the water to get cloudy in the first place.

    You should do an overnight FC loss test and post a full set of water 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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