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Thread: Guidence on pool store computer please

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    Guidence on pool store computer please

    Hi all!

    I am new to posting here so please give me some guidance. I am finding a large discrepancy between the numbers I am finding with the TFP test kit and the "Alex" computer testing system at the pool store. Let me say, "I am a believer!". My pool was finished in August and it has been clear and sparkly from day one. I have not shocked it once since it has been in the ground as I haven't had to. I had my boric acid, from Duda Diesel, ready when the thirtieth day after the pool was filled hit. I just need to know if the discrepancy in the numbers below are telling about the Biolab testing system used at the local pool store or my testing ability. Does anyone know exactly how accurate and foolproof one of these computerized disk type testing things are?

    Thanks,
    RK ALEX

    FC 8 8
    CC under .5 0
    PH 7.4 7.6
    TA 100 84(65 adjusted)
    CH 250 141(total hardness)
    CYA 45 62
    Borates 80 80
    Houston Texas area, 19,400 Gal., IG, Gunite, Pebble sheen pool with 1,273 gal. spa. Pentair equip.: Intelliflow variable speed pump (pool), Whisper flow 2.5 HP (6 scuppers), DE filter 60 Sq feet plus, Kreepy Krauly Prowler 830 robotic cleaner, Ultra pure ozonator 25k gal., Stenner pump with 15 gal tank (s1g45mfh7a2s) , 1.5 HP Silencer Blower, EZ touch controller system with Screen logic system. Installed 08/2014.

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    Mod Squad jblizzle's Avatar
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    Re: Guidence on pool store computer please

    This is easy ... stop going to the pool store to have your water tested. No more confusion.

    I have less faith in any of the comupter testing at a pool store than I do of a pool store that uses the proper drop tests ... and that faith is WAY WAY lower than if you test yourself.
    Jason, TFP Moderator
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    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    Re: Guidence on pool store computer please

    Thanks man. Just making sure.
    Houston Texas area, 19,400 Gal., IG, Gunite, Pebble sheen pool with 1,273 gal. spa. Pentair equip.: Intelliflow variable speed pump (pool), Whisper flow 2.5 HP (6 scuppers), DE filter 60 Sq feet plus, Kreepy Krauly Prowler 830 robotic cleaner, Ultra pure ozonator 25k gal., Stenner pump with 15 gal tank (s1g45mfh7a2s) , 1.5 HP Silencer Blower, EZ touch controller system with Screen logic system. Installed 08/2014.

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    Re: Guidence on pool store computer please

    Computer light testing judges the reagents they use against a color that is programmed into it. Chlorine of 8 could be making those colors lighter and causing the error. Two years in a pool store using lamotte spin disk taught me one thing...chlorine readings up to 12 are the only thing that I would trust. Drop test would show a Ph of 7.2 while spin disk would say its 8.1 and suggest the customer add x amount if dry acid lol. Drop test will show you the change in color, that's your count for ppm. Pool stores love these systems for one reason, it's simple, baffles the customer, gives suggestions based in what the store impute for parameters and they can have staff with zero knowledge give out advice.

    Stay away from any store that is using a computer to test water is my opinion.

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    Smykowski's Avatar
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    Re: Guidence on pool store computer please

    A computer is only as accurate as the data input to the machine. I'm not sure what exactly your pool store is using, but we've already determined that test strips are junk. If the computer is accurately reading junk, well....

    I haven't let a pool store test my water in over 3 years. It's just not worth the stress.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    Re: Guidence on pool store computer please

    Thanks everyone. Really the reinforcement I needed (other than a clear pool) to be sure that I am on the right track. Those guys in the pool store say the funniest things.
    Houston Texas area, 19,400 Gal., IG, Gunite, Pebble sheen pool with 1,273 gal. spa. Pentair equip.: Intelliflow variable speed pump (pool), Whisper flow 2.5 HP (6 scuppers), DE filter 60 Sq feet plus, Kreepy Krauly Prowler 830 robotic cleaner, Ultra pure ozonator 25k gal., Stenner pump with 15 gal tank (s1g45mfh7a2s) , 1.5 HP Silencer Blower, EZ touch controller system with Screen logic system. Installed 08/2014.

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    Mod Squad JVTrain's Avatar
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    Re: Guidence on pool store computer please

    Quote Originally Posted by RKnight View Post
    Thanks everyone. Really the reinforcement I needed (other than a clear pool) to be sure that I am on the right track. Those guys in the pool store say the funniest things.
    Testing yourself with a good test kit trumps pool store results any time. It's more accurate and done immediately after sampling the water. Best results you can get. Plus, you actually care about your pool. Most pool stores really only care about removing money from your wallet.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Re: Guidence on pool store computer please

    Agree totally, yet another sad fact is most pool store owners, do not own a pool. They have no idea the frustrations owners go through when having issues and merely comment that so and so owner is merely a PITA.

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    Mod Squad tim5055's Avatar
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    Re: Guidence on pool store computer please

    Quote Originally Posted by pooladdict View Post
    yet another sad fact is most pool store owners, do not own a pool.
    I don;t know if I can agree with that statement.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Guidence on pool store computer please

    Do a survey, I did in my neck of the woods. 19 stores, 6 own pools

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    Re: Guidence on pool store computer please

    That's a fun fact, but perhaps not particularly valid. Pools take money and space. Not everyone has that. You don't need to own a plane to be really good at flying one.

    - - - Updated - - -

    I see my listing has changed to senior member. I must have passed some posting threshold. Don't feel like I'm senior in anything, although I am fairly comfortable with the testing and chemistry alignment of my own pool.
    Central TX / 12K GAL / IG / SWG / DE filter / Pentair SVRS & 3 swim jet pumps / Spa bench and jets / Single body of water / No heater.

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    Re: Guidence on pool store computer please

    I think its valid, because if you don't own a pool, you have no idea why someone would be so fussy with their backyard oasis. I saw it in the pool store I worked in for two years.

    I cant wait to be a Senior, prolly be no discounts by that time lol

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