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Thread: Converting to SWG. Going from 0 to 3400ppm question.

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    Shekkie's Avatar
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    Converting to SWG. Going from 0 to 3400ppm question.

    Over the off season I picked up a Pentair IC60 to convert my pool to saltwater goodness. Using PoolMath I came up with needing about 940 pounds of salt to bring me to 3400ppm so I added 800 pounds last week figuring I probably had some salt in the water from using chlorine and I wanted to creep up on my goal rather than overshoot. I tested yesterday and had 625ppm. I thought I'd be just under 3000ppm. I am in the process of rewiring the electrical system in my garage that feeds the pool equipment so I have only been running the pump a few hours a day when I can temporarily hook it up but there is no visible salt on the liner and I would think the salt is dissolved pretty thoroughly and dispersed at this point.

    Any thoughts on why my reading is so low? Is this normal? PoolMath estimates about 800 pounds more to bring me on target which puts me at 40 bags total......seems like an awful lot. I am fine if that is what it takes but I'd rather not have 15 bags of salt laying around all Summer.

    33k(ish) gallon, IG, vinyl liner, Pentair IC60 SWG, Pentair Triton II sand filter, 1.5hp Pentair VS pump (SuperFlo), Sta-Rite (Pentair) 400K BTU heater (LP), (2) Pentair LED spa lights, TF-100 test kit w/speed stir

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    Re: Converting to SWG. Going from 0 to 3400ppm question.

    Are you just looking at the digital readout on your SWG? You can always use a drop salt test in conjunction with your SWG. I use the Taylor K-1766. My salt takes about 12 hours to dissolve, so I think yours should be well dissolved after a week.

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    Shekkie's Avatar
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    Re: Converting to SWG. Going from 0 to 3400ppm question.

    I used salt test strips. I haven't got around to ordering a resupply from TFTestkits yet of my other needed stuff and will order a better salt test setup when I do. The strips I used tested accurately to my friend's pool with a salt level readout on his control panel so I figured they'd get me in the ballpark.
    33k(ish) gallon, IG, vinyl liner, Pentair IC60 SWG, Pentair Triton II sand filter, 1.5hp Pentair VS pump (SuperFlo), Sta-Rite (Pentair) 400K BTU heater (LP), (2) Pentair LED spa lights, TF-100 test kit w/speed stir

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    Mod Squad jblizzle's Avatar
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    Re: Converting to SWG. Going from 0 to 3400ppm question.

    There is no way that your test was correct. Also note that most pools do not start with a salt level of 0.
    Jason, TFP Moderator
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    Mod Squad Jimrahbe's Avatar
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    Re: Converting to SWG. Going from 0 to 3400ppm question.

    Shek,

    Well, either you didn't add 20 bags of salt, or your test strips are not accurate..

    Which do you think it is??

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    Shekkie's Avatar
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    Re: Converting to SWG. Going from 0 to 3400ppm question.

    I assumed that my pool had some salt from the chlorine so that was another reason I undershot.

    Maybe it just seemed like 20 bags.

    I figured the test strips were at fault which is why I tested them on my buddy's pool to verify. Ugh.

    It's too cold to swim anyway so I have some time to get it figured out....thanks all!
    33k(ish) gallon, IG, vinyl liner, Pentair IC60 SWG, Pentair Triton II sand filter, 1.5hp Pentair VS pump (SuperFlo), Sta-Rite (Pentair) 400K BTU heater (LP), (2) Pentair LED spa lights, TF-100 test kit w/speed stir

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