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Thread: Odd salt level results

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    Elgrecus's Avatar
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    Odd salt level results

    I just finished shocking my pool which has an SWG. We are new owners, so just getting into managing the pool chemistry. After running the full battery of tests, the salt level was basically at zero. The Pool Calculator said to add around 240 pounds of salt. My goal was 4,500 ppm which is what ECO-matic recommends in the owner's manual. I then tested the salt level using Aquachek salt test strips and it showed a 5.5 which is 2,190 ppm according to the chart on the bottle. That is less than half of what I expected to get, and the water tastes pretty salty. Can the salt test strips be that far off? Is there a better way to test the salt level? I did raise my CYA from 20 to 30 ppm after adding the salt. Here are my results. Any thoughts? I am obviously hesitant to add more salt. By the way, is it ok to pull samples of water from the skimmer when the pump is running? Sometimes I am too lazy to pull out the key to open the retractable pool cover. Thanks in advance for your help.

    FC = 4.0 ppm
    pH = 7.6
    TA = 150
    CH = 350 ppm
    CYA = 30 ppm
    Pool Size: 9,000 gallons
    Pool Type: In ground, plaster
    Filter: Pentair 4000 Series D.E. Filter
    Pump: 1 HP Pentair Whisperflo WFE-4
    Heater: Sta-Rite Max-E-Therm 200
    Salt System: ECO-matic ESC 36
    Pool Cover: CoverStar, motorized cover

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    Mod Squad jblizzle's Avatar
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    Re: Odd salt level results

    How long did you circulate the water before testing for salt? I use a drop test for the salt, so no experience with the strips.

    What does the SWG think the salt level is? Assuming you have now circulated for 24 hours.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Elgrecus's Avatar
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    Re: Odd salt level results

    Thanks for the reply. It was about 5 days that I let the water circulate before testing the salt level. I haven't turned on the SWG yet. My FC levels were high after shocking so I was going to wait until they fell a little before turning it back on. The SWG may be faulty anyway. It is eight years old. Before I shocked the pool both red warning lights were on. That could be because there was no salt or because it is dying.
    Pool Size: 9,000 gallons
    Pool Type: In ground, plaster
    Filter: Pentair 4000 Series D.E. Filter
    Pump: 1 HP Pentair Whisperflo WFE-4
    Heater: Sta-Rite Max-E-Therm 200
    Salt System: ECO-matic ESC 36
    Pool Cover: CoverStar, motorized cover

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    Mod Squad jblizzle's Avatar
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    Re: Odd salt level results

    Ah. Just wanted to make sure you gave it at least a day. How old are the salt test strips?
    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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    Elgrecus's Avatar
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    Re: Odd salt level results

    I just purchased them about two weeks ago. The bottle says they are good through 2015.
    Pool Size: 9,000 gallons
    Pool Type: In ground, plaster
    Filter: Pentair 4000 Series D.E. Filter
    Pump: 1 HP Pentair Whisperflo WFE-4
    Heater: Sta-Rite Max-E-Therm 200
    Salt System: ECO-matic ESC 36
    Pool Cover: CoverStar, motorized cover

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    Mod Squad jblizzle's Avatar
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    Re: Odd salt level results

    Well I am out of ideas. usually adding salt results in a pretty solid target because there is no question about strength. I have just added 320 pounds to my pool and the rise was right what I expected.

    Wonder if the strips are a bad batch?
    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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    Elgrecus's Avatar
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    Re: Odd salt level results

    I just retested it twice. Both times came out showing approximately 4,500 ppm. Exactly the target I was going for. I am not sure why the result was so far off a couple of days ago. Either because I had just increased my CYA slightly, or more likely, some kind of user error. Thanks for the help though.
    Pool Size: 9,000 gallons
    Pool Type: In ground, plaster
    Filter: Pentair 4000 Series D.E. Filter
    Pump: 1 HP Pentair Whisperflo WFE-4
    Heater: Sta-Rite Max-E-Therm 200
    Salt System: ECO-matic ESC 36
    Pool Cover: CoverStar, motorized cover

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