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Thread: Prefill Test Results

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    Join Date
    Apr 2009
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    Prefill Test Results

    Plastering next week ... I checked the Pool Calculator and am confused about a couple of items ... What shouold I have on hand for the initial fill ...

    Test Results from my well water ...

    FC - 0
    CC - 0
    TC - 0
    pH - 7.6
    TA - 130
    CH - 40
    CYA - 0

    Thanks for any help ...

    --Jack
    40K gal rectangular IG Gunite ... white plaster ... 20 ft negative edge ... 2 Intelliflo VF 3050 pumps ... 2 Sta-Rite Cartridge filters ... IC60 SWG ... Pentair Thermaflo heat pump

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    JasonLion's Avatar
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    Re: Prefill Test Results

    Your fill water numbers look good.

    You should have a couple of gallons of muriatic acid and a fair number of trichlor tablets on hand, though you probably won't use either right off. The key step for a fresh plaster startup is to talk to the plaster people, or your builder if they are present and actively managing the process, and find out what they are doing and what you are doing. You don't want to be working at cross purposes to the professionals during the first couple of days. You should also follow their advice as much as possible right at first, even if it contradicts something we tell you, because you don't want to do anything that might void your warranty.

    Assuming the builder/plaster people don't tell you anything different, you will want run the pump 24x7 to start with. After about two days, start using trichlor tablets and monitoring the PH. The PH will tend to go up very rapidly for the first three or four weeks. You want to keep the PH below 8.0 at all times, which will probably mean daily acid additions. You don't usually want to be adjusting TA or CH for the first several weeks. Both TA and CH will rise on their own as the plaster cures. The builder may add a large amount of acid near the start. Don't raise the PH, let it come up on it's own.
    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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    Re: Prefill Test Results

    Thanks, Jason ...

    I have read the New Plaster StartUp procedures in the Pool School and everything else there ... there is no builder and I don't expect the plaster crew to be much help ... generally all they do is sub for several builders ... I do have acid on hand and will get the trichlor tablets ... I also have several gallons of bleach ... don't know why I thought I would need that right away ...

    --Jack
    40K gal rectangular IG Gunite ... white plaster ... 20 ft negative edge ... 2 Intelliflo VF 3050 pumps ... 2 Sta-Rite Cartridge filters ... IC60 SWG ... Pentair Thermaflo heat pump

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    Richard320's Avatar
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    Re: Prefill Test Results

    It might be worthwhile to have your well water tested for metals. That way you won't be shocked and horrified if it turns colors. And you can get the good sequestrant beforehand, rather than scramble and end up with whatever carp the local pool store has on the shelves.
    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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    Re: Prefill Test Results

    Thanks, Richard ...

    Where does one get the water tested for metals ... the dreaded pool store ??? and what is the good sequestrant ???

    Hoping to plaster tomorrow ... if moisture from Alex doesn't interfere ...

    --Jack
    40K gal rectangular IG Gunite ... white plaster ... 20 ft negative edge ... 2 Intelliflo VF 3050 pumps ... 2 Sta-Rite Cartridge filters ... IC60 SWG ... Pentair Thermaflo heat pump

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    duraleigh's Avatar
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    Re: Prefill Test Results

    Hi, Jack,

    Welcome to the forum. For the life of me, I can't see in your posts where you are filling from a well.....I'm getting old!!

    Anyway, if you do test positive for metals, I would consider having water trucked in if the price is not outrageous.

    Battling metals from a well is perhaps the most problematic issue we have here on the forum and it NEVER goes away....NEVER!

    If you brought in good water and then refilled from water-softened water (which I assume you would have if you have metals in your house water) you would never, ever have to deal with sequestrants, etc and pool management is much less of an issue.

    Iron in the water can always be dealt with but you must always deal with it.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Richard320's Avatar
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    Re: Prefill Test Results

    Quote Originally Posted by jack@eztrakr.com
    Thanks, Richard ...

    Where does one get the water tested for metals ... the dreaded pool store ??? and what is the good sequestrant ???

    Hoping to plaster tomorrow ... if moisture from Alex doesn't interfere ...

    --Jack
    As far as I know, yes, the pool store. Or spend a small fortune on the specialized test kits. You'd have to post the question about the best metal sequestrant - I only know what i've read here; my water comes through a meter.
    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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    Re: Prefill Test Results

    Thanks all ...

    The good news is no metal ... my well is deep and draws from the same aquifer that Ozarka bottled water uses ...

    My bad news is that plaster has been delayed because of rain ...

    --Jack
    40K gal rectangular IG Gunite ... white plaster ... 20 ft negative edge ... 2 Intelliflo VF 3050 pumps ... 2 Sta-Rite Cartridge filters ... IC60 SWG ... Pentair Thermaflo heat pump

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    Re: Prefill Test Results

    Quote Originally Posted by jack@eztrakr.com
    Thanks all ...

    The good news is no metal ... my well is deep and draws from the same aquifer that Ozarka bottled water uses ...

    My bad news is that plaster has been delayed because of rain ...

    --Jack
    But better than not being delayed and then damaged by rain.

    Wow, that will be good water.
    23,000 gallon in ground pool with rock waterfall and spillover spa, Aqualink control system, Polaris 380 cleaner, Purex Triton Clean&Clear Plus cartridge filter. Located in The Woodlands, Texas.

    Pool owner since Nov 2008, Trouble Free since April 2009. Happy to help when I can.

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