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Thread: New Owner - Initial Test Kit Results

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    delirium330's Avatar
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    New Owner - Initial Test Kit Results

    Hi All, here are my results. I did my best to estimate pool volume at 14,324 gallons. The water is pretty crystal clear at the moment and I stuck 4-5 pucks in the chlorinator about 2 weeks ago (water was clear before I did that) and have been running the pump about 3 hours a day. Not currently swimming in it (too cold in CA for now). I try to brush it once a week and notice just a bit of brown spots on the walls form if I don't brush for 2+ weeks.

    Looks like the site won't let me upload my Excel screenshot chart via JPEG (only 100kb!), so here is what I've got:

    FC (Free Chlorine) - 0
    PH (Acidity/Aklalinity) - 7.5
    TA (Total Alkalinity) - 90
    CH (Calcium Hardness) - 340
    CYA (Cyanuric Acid) - 45
    CC (Combined Chlorine) - 0
    Bromine - 0

    Based on the PoolMath calculator and a 14,324 gallon pool, I need a FC shock level of 18 which is about 389oz of 8.25% of liquid chlorine. My questions are:

    1. I assume I should pull the pucks out of the chlorinator when I SLAM?
    2. Does the above approach look correct re: FC shock level and amount of chlorine?
    3. To avoid multiple trips to the store, about how much chlorine should I buy beyond the initial 432oz (assuming 8.25%)?

    Thanks!
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Re: New Owner - Initial Test Kit Results

    You should stop using pucks altogether, because at 45 you are already at the high end of where you should be for CYA.

    It is hard to estimate how much bleach you will need, because it is impossible to determine how long it will take to kill the organics in the pool. If you caught it early, it may go quickly. It's not uncommon to take 2-3 weeks though, for some pools.

    You can ignore the bromine reading. You don't have a bromine pool.
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    delirium330's Avatar
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    Re: New Owner - Initial Test Kit Results

    I put in 389oz of chlorine last night to shock the pool from 0 to 18 FC. Well when I checked this morning (12 hours later) I am getting FC of 19 and CC of barely .05 or a bit less. So, obviously my measurments were a bit off, probably pool volume as the pool is very irregular in shape and took an hour or so to get an estimated measurement.

    The water was clear before the shock and still is. What now? Do I put the pumps back to normal operation and wait for FC levels to drop gradually? Do I keep them running 24/7? Do I need to lower the FC somehow to ideal ppm?
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Re: New Owner - Initial Test Kit Results

    One more question for you, I see it is 38 degrees F where you are this morning, when you did your CYA test, did you let the water sample warm to room / swim temperature first, and did you test under the proper lighting conditions (outdoors with the sun to your back, tube held at waist level)? Both lighting and water temperature can have large effects on the CYA test, personally I think this is part of the reason pool stores get it wrong so often as they try to perform the test under common artificial light, not outdoors or under an expensive sunlight simulator.

    Ike
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    delirium330's Avatar
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    Re: New Owner - Initial Test Kit Results

    Quote Originally Posted by Isaac-1 View Post
    One more question for you, I see it is 38 degrees F where you are this morning, when you did your CYA test, did you let the water sample warm to room / swim temperature first, and did you test under the proper lighting conditions (outdoors with the sun to your back, tube held at waist level)? Both lighting and water temperature can have large effects on the CYA test, personally I think this is part of the reason pool stores get it wrong so often as they try to perform the test under common artificial light, not outdoors or under an expensive sunlight simulator.

    Ike
    Yep I did let the water sit inside for about 2 hours before I did my baseline test. I technically did the test indoors, but was standing next to a large sliding door with plenty of sunlight. It was a bit subjective, but hopefully got somewhere pretty close.
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Re: New Owner - Initial Test Kit Results

    I suspect you test numbers will read higher on CYA if you do the test outdoors in full sunlight to your back, unless the room you were in was flooded by sunlight. It does also take a bit to get the hang of the CYA test, remember you can pour the solution back and forth for several minutes until you are sure of your readings. I have done that test before in brief times while the sun was trying to peak out from behind clouds and even that much change in lighting effects the results.

    Ike
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    Richard320's Avatar
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    Re: New Owner - Initial Test Kit Results

    Why SLAM at all? The water was clear and the CC was zero. And it sounds like you didn't lose any overnight. You probably could have just gotten away with raising FC to normal and leave it at that. Anyway, now you just get to wait and wait and wait for FC to drop to normal and maintain it there. It's time to stop with the pucks. Your CYA level is already close to ideal, and you want to leave a little breathing room so you can use them if you leave town later on in the year.

    2nopucksforyou.jpg
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Re: New Owner - Initial Test Kit Results

    Quote Originally Posted by Richard320 View Post
    Why SLAM at all? The water was clear and the CC was zero. And it sounds like you didn't lose any overnight. You probably could have just gotten away with raising FC to normal and leave it at that. Anyway, now you just get to wait and wait and wait for FC to drop to normal and maintain it there. It's time to stop with the pucks. Your CYA level is already close to ideal, and you want to leave a little breathing room so you can use them if you leave town later on in the year.
    Sounds good. I took the pucks out and will leave them out! The SLAM instructions said to SLAM if FC was 0... and some other threads said that even if the water is clear, if FC is 0, then there may be stuff lurking that I just can't see.

    What's the best protocol while waiting for FC to come down? Keep pumps running, or go back to winter operation of about 3-4 hours a day?
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Re: New Owner - Initial Test Kit Results

    Th FC will drift down. There is no hurry. Resume normal operations.
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    Re: New Owner - Initial Test Kit Results

    Quote Originally Posted by jblizzle View Post
    Th FC will drift down. There is no hurry. Resume normal operations.
    Will do... any thoughts on time to come into normal levels? 1 week or are we talking one month?
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    pwrstrk's Avatar
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    New Owner - Initial Test Kit Results

    Quote Originally Posted by delirium330 View Post
    Will do... any thoughts on time to come into normal levels? 1 week or are we talking one month?
    Your water temp will affect how fast your FC levels will taper off. Colder water temps tend to hold FC levels longer. Also if you have it covered FC levels will hold longer.

    You can still swim with FC levels up to slam level if your water temp is warm enough.
    Jeff
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    Richard320's Avatar
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    Re: New Owner - Initial Test Kit Results

    Quote Originally Posted by delirium330 View Post
    Will do... any thoughts on time to come into normal levels? 1 week or are we talking one month?
    If your chlorine consumption is anything like mine is this time of year, I'd put it at 3 weeks to a month. Unless there was some nastiness growing, in which case, much faster.
    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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    delirium330's Avatar
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    Re: New Owner - Initial Test Kit Results

    Quote Originally Posted by Richard320 View Post
    If your chlorine consumption is anything like mine is this time of year, I'd put it at 3 weeks to a month. Unless there was some nastiness growing, in which case, much faster.
    Sounds good. That helps me figure out how often I went to re-test. Optimally, for my own learning purposes, I'd like to see a new measurement every day, but don't want to spend the time or amount of FAS/DPD chemicals to do so. Maybe I'll do every 6-7 days for now to see how quickly it gets consumed.
    Built 2003, 14k Gallons, IG Pebbletec, Primary Pump: Sta-Rite Intellipro VS, Sta-Rite Series 3 S8M150 Cartridge Filter, Fiberstars Jazz Light w/Color Wheel, Polaris 280 Vacuum (Runs Zodiac PB4-60 Booster Pump) and 2 Waterfalls (Run on separate, dedicated 1HP Sta-Rite Max-E-Glas II Pump).

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    Re: New Owner - Initial Test Kit Results

    This time of year, that might be just fine. Once it starts warming, it will drop dramatically faster.

    Looks like you will do well with things.
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