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Thread: First Test Results

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    First Test Results

    Hello,

    We've had our new pool for two weeks now and have had three tests done. After our latest test (today) the pool store said everything looked fine and only said to get the PH lower, but the FC and TC seemed high to me so I wanted to get any thoughts. Also, there was a line so I couldn't get into too deep a conversation at the store. Here are the three sets of results:

    June 10 ...... June 1 ...... May 29th

    FC - 8.34 ........ 1.27 ........ .07
    CC - .66 ...... 1.68 ...... .33
    TC - 9 ...... .41 ....... .4
    pH - 8.1 ...... 8 ...... 8.4
    TA - 134.2 ...... 93.9 ...... 48.8
    CH - 172 ...... 100 ...... 95
    CYA - 16 ...... 47 ...... 4
    Salt - 3600 ...... 3400 ...... 3400


    We've had rain over the past three days so I've run the chlorinator at a higher setting (4 out of 5) and run the pump an average of 12 hours. Also, there hasn't been much sun over the past week and the solar blanket was on the whole time.

    Just wondering:

    1) Has my FC increased due to running the SWG at a higher setting and for longer? Any thoughts on what the "normal" running setting should be out of 5?
    2) My CYA got into the low end of the acceptable range on June 1st but dropped at the most recent test. At opening, I was told to put in 10 pucks, two at a time, and I've gone through 4 and about to put the next two in, is this why its low?
    3) My combined chlorine seems high at .66 but will this be taken care of by the much higher FC?

    Thanks in advance for any thoughts or advice!
    In ground, 19K gallons, hayward sand filter, Zodiac DuoClear SWG, Vinyl liner, South of Toronto, Solar Blanket only

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    Mod Squad jblizzle's Avatar
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    Re: First Test Results

    Welcome to TFP!!!

    Well, you test results are a perfect example of why we always say to order one of the Recommended Test Kits and not trust pool store results.

    The one that sticks out is the CYA ... there is no way it went from 4 up to 47 and then down to 16.
    You should really add the stabilizer separately as adding the CYA using pucks is a slow process.

    I would not change anything in the water until you test it for yourself using a good test kit.
    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
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    Re: First Test Results

    Thanks for the quick reply Jason, appreciate it. I've already checked out the test kit link and will be ordering the recommended one shortly. Just wondering why pool store test results are so bad? Wouldn't stores typically have good equipment and expertise in testing?
    In ground, 19K gallons, hayward sand filter, Zodiac DuoClear SWG, Vinyl liner, South of Toronto, Solar Blanket only

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    Richard320's Avatar
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    Re: First Test Results

    Welcome!

    Hey - do you go to the same store as ndimtchev? His results are all over the place, too!
    inconsistency-in-readings-t61728.html

    You'll have to ask the pool store if it's ineptitude or fraud.
    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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    Mod Squad jblizzle's Avatar
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    Re: First Test Results

    You mean the teenager that is working a summer job for minimum wage?

    Sure they may have ridiculously expensive electronic test readers, but if they are not calibrated and kept clean, then the results suffer. Some of them even just read the colors off of test strips, which we have repeatedly seen as not worth the paper they are on ... just not accurate enough and results vary with age and the amount of time exposed to 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
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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    Re: First Test Results

    lol, I hear you guys.

    Just for education purposes, lets say the most recent results are accurate - what course of action would you recommend along with lowering the PH?
    In ground, 19K gallons, hayward sand filter, Zodiac DuoClear SWG, Vinyl liner, South of Toronto, Solar Blanket only

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    Richard320's Avatar
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    Re: First Test Results

    Quote Originally Posted by Carter20
    lol, I hear you guys.

    Just for education purposes, lets say the most recent results are accurate - what course of action would you recommend along with lowering the PH?
    Why would the most recent be the most accurate?

    pH has been consistently high, FC has gone low.

    Lower pH, raise FC.
    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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    Mod Squad jblizzle's Avatar
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    Re: First Test Results

    I think Richard read your table backwards since the most recent are on the left.

    If the water is clear, and we ignore the CC > 1.0 (which would indicate a reason for the shock process):

    Raise the CYA up to 70-80ppm for the SWG (this will contribute to lowering the pH as well)
    lower the pH
    lower the SWG output and/or pump run time to lower the FC

    pool-school/recommended_levels
    pool-school/water_balance_saltwater_generator
    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
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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