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Thread: New pool owner... somewhat confused about testing

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    carlos31820's Avatar
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    New pool owner... somewhat confused about testing

    Ok, I have a 22,500 vinyl pool. The pool is chlorinated with a SWG. Water temperature is 50F. The PB recently added all the salt to the water. My SWG manual states salt should be about 4000ppm. It's currently 3850.

    My confusion stems from reading my chlorinator manual (Jandy Ei chlorinator), and comparing it's suggested chemistry numbers to what's suggested by the pool calculator when selecting the suggested ranges for Traditional Pool or Troublefreepool.com suggested ranges. My confusion is that all three sources seem to differ somewhat.

    The suggested ranges according to my chlorinator manual are as follows:

    FC: 1-3
    CC: none
    pH: 7.4-7.6
    CYA: 10-50
    TA: 80-120
    CH: 175-400

    I ordered the TF-100 kit with the speedstir and have done tests the past two nights to get the hang of it. The testing itself is very straight forward. Here are the numbers for my pool:

    FC: 2
    CC: 0
    TC: 2
    pH: 7.4
    TA: 40
    CH: 50
    CYA: 0
    Temp: 50F

    Are these numbers normal for a newly-filled vinyl pool? When I plug these numbers into the pool calculator it looks like I have to make many adjustments (TA, CH, CYA). Am I obsessing over this stuff too much? Do I need to worry about correcting any of these things with the water being so cold and nobody swimming? Do I need to care about CH in a vinyl pool?
    16x36 Vinyl Pool - 22.5K gallons.
    Jandy Stealth 1hp pump - Jandy CS-150 filter
    Jandy Legacy 250k heater - Jandy Ei SWCG
    Jandy Watercolors LED light
    Paramount Vanquish in-floor cleaner

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    Richard320's Avatar
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    Re: New pool owner... somewhat confused about testing

    Relax

    1) You will have to add CYA aka Stabilizer, as it doesn't come in tap water. Go easy on it - you can always add more, but getting rid of it's a pain. You can find it at Walmart, Lowes, or the pool store. Guess who will be cheaper?
    2) Low CH is not a cause for concern in a vinyl pool. Besides, as water evaporates it leaves Calcium behind, and it will climb all by itself.
    3) You can adjust TA if you want. You're just a little below minimum. Check the grocery store, Walmart, Costco, wherever, for baking soda. Or go to the pool store and spend 3X for the same thing with a prettier package and a fancy name.

    Be sure to read Pool School. Once the headache subsides and you've added stuff to the pool and seen the results, it will all suddenly make sense.
    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: New pool owner... somewhat confused about testing

    One day Carl, you will pass this on to somebody willing. I remember when Richard was equally confused.

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    carlos31820's Avatar
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    Re: Re: New pool owner... somewhat confused about testing

    Quote Originally Posted by Richard320

    Be sure to read Pool School. Once the headache subsides and you've added stuff to the pool and seen the results, it will all suddenly make sense.
    Richard thanks for the reply. I think my problem is that I've been reading too much! Lol.

    Anyway I've been checking out the Pool School posts as well as these forums. Lots of knowledge on this website.


    16x36 Vinyl Pool - 22.5K gallons.
    Jandy Stealth 1hp pump - Jandy CS-150 filter
    Jandy Legacy 250k heater - Jandy Ei SWCG
    Jandy Watercolors LED light
    Paramount Vanquish in-floor cleaner

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    carlos31820's Avatar
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    Re: Re: New pool owner... somewhat confused about testing

    Quote Originally Posted by PoolGuyNJ
    One day Carl, you will pass this on to somebody willing. I remember when Richard was equally confused.

    Scott
    Thanks Scott. I know its just a matter of time before I get the hang of it. Im just very green since this is my first pool. Im trying to start off on the right path...

    16x36 Vinyl Pool - 22.5K gallons.
    Jandy Stealth 1hp pump - Jandy CS-150 filter
    Jandy Legacy 250k heater - Jandy Ei SWCG
    Jandy Watercolors LED light
    Paramount Vanquish in-floor cleaner

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    Mod Squad Bama Rambler's Avatar
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    Re: New pool owner... somewhat confused about testing

    Since you're new to all this I suggest you adjust one thing at a time and test that till you get the hang of it. With the water as cold as it is you don't need to be in any hurry about doing anything.

    I would personally adjust the TA first, but it doesn't really matter which you do. I'd shoot for a TA of about 60 to 80. With a TA of 40 there's a likelyhood of the pH swinging wildly.

    Next I'd add some Cyanuric acid to get you to about 50 ppm to begin with. I'm a little surprised that the SWCG recommended a CYA that low.

    Don't add any more salt. You also need to read your SWCG manual to see at what temp it shuts down. If it's near where you are now you may have to manually chlorinate for a little while.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: New pool owner... somewhat confused about testing

    Hey, Carlos,

    I can't add anything new to what these wise gentlemen have already suggested but am posting to express my agreement.

    I also first thought the numbers had to be very precise also and have learned over time there is some leeway. Your test results look good and, once you perform the suggested adjustments, I think you are in for a troublefree pool!! Nice work!!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    carlos31820's Avatar
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    Re: New pool owner... somewhat confused about testing

    What's the best way to add the cya granules? Container says to add to skimmer basket but im wondering about my cartridge filter. Is the water temperature an issue for dissolving the cya? Sorry for the newbie questions.

    16x36 Vinyl Pool - 22.5K gallons.
    Jandy Stealth 1hp pump - Jandy CS-150 filter
    Jandy Legacy 250k heater - Jandy Ei SWCG
    Jandy Watercolors LED light
    Paramount Vanquish in-floor cleaner

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    JasonLion's Avatar
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    Re: New pool owner... somewhat confused about testing

    CYA takes a long time to dissolve at the best of times, longer still when the water is cold.

    You can add it to the skimmer as long as you pour slowly and don't clean the filter for at least a week. Most people here prefer to put the CYA in a sock and put the sock in the skimmer or hang it in front of a return jet.
    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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    carlos31820's Avatar
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    Re: New pool owner... somewhat confused about testing

    Quote Originally Posted by duraleigh
    Hey, Carlos,

    I can't add anything new to what these wise gentlemen have already suggested but am posting to express my agreement.

    I also first thought the numbers had to be very precise also and have learned over time there is some leeway. Your test results look good and, once you perform the suggested adjustments, I think you are in for a troublefree pool!! Nice work!!
    I'm glad you said that. I was talking to some friends who own pools and a few of them didn't even know what CYA (stabilizer) is, why you need it, or why you don't need too much. It made me realize this must not be as precise as I was making it out to be if these people have owned pools for years and don't seem to be having major issues. That being said, however, I know a couple of them have had to battle a few algae outbreaks.

    This forum and its members are a great knowledge resource. I prefer to learn the ins and outs of my hobbies, etc so perhaps I'm being overly analytical (or paranoid).
    16x36 Vinyl Pool - 22.5K gallons.
    Jandy Stealth 1hp pump - Jandy CS-150 filter
    Jandy Legacy 250k heater - Jandy Ei SWCG
    Jandy Watercolors LED light
    Paramount Vanquish in-floor cleaner

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    benavidescj's Avatar
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    Re: New pool owner... somewhat confused about testing

    Carlos, I was equally confused when I started out. One thing for sure is that you have found the best place on the internet to learn and ask questions. Here in about a month or two after you gain confidence and you pool is sparkaling you will feel better. Test often, watch the numbers and keep them stable. After a while when you get the hang of it you will trully have a Trouble Free Pool.
    Carlos
    Pool: 28,000 gallons IG; IC 40 SWG; Pentair 120 gpm cartridge filter; Marble finish; Pentair Wisperflow 1.5 hp; Polaris 360
    Spa: 350 gallon; Bromine
    How to shock your pool

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    dmanb2b's Avatar
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    Re: New pool owner... somewhat confused about testing

    Quote Originally Posted by carlos31820
    This forum and its members are a great knowledge resource. I prefer to learn the ins and outs of my hobbies, etc so perhaps I'm being overly analytical (or paranoid).

    As Dave mentioned, you've gotten great advice so far and from what I can tell you seem to be simply experiencing the same recurring symptoms most TFP'ers battle with day in and day out....

    Sorry to say this but what you are going through is just a bad case of sparklypoolitis


    Adjust that TA to about 60 and take your time with the CYA and you'll be in great shape
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

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