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Thread: Help! SWG and chemical levels all wrong

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    Help! SWG and chemical levels all wrong

    I have an intex Krystal Clear Saltwater System & Filter Pump Model CS8111

    I am having problems knowing what to put into my pool because my results seem to be all over the board. I got a salt water pool so that I didn't have to add a bunch of chemicals but it seems you need to even though that is one of the selling features of a salt water pool. Could anyone help me get these chemical levels straightened out with the least amount of chemicals?

    Right now I am using the Aqua Chem test strips for a salt water pool because that is all I could find at the store.

    Total Hardness 250
    Total Chlorine 0 - very low
    Free Chlorine 0 - very low
    PH 8.0
    Total Alkalinity I got a blue and that wasn't on the chart
    Stabilizer 0 - very low

    My water is very clear but we really haven't gotten to swim too much yet. It might just be that I need to run my SWG more. Any help would be appreciated!


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    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    SW Indiana

    Re: Help! SWG and chemical levels all wrong

    Very difficult to tell with the strips. Your chlorine may be high and bleaching the strip, which might account for the blue in the TA test.

    Ignore pH and TA for the short term. You need Stabilizer/CYA to whatever level your SWCG manufacturer recommends, and you need an accurate chlorine reading. Without chlorine, your pool is going to get away from you quickly. Try testing a 50/50 mixture of tap water and pool water just to see what you have.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    Re: Help! SWG and chemical levels all wrong

    As I recall the Intex instructions were for like 20 or 30 CYA... Which was waaaay too low for me to keep my pool algae free. I'm in Texas and I couldn't keep up with the chlorine demand until I was above 50.. All the SWG does is make it so you don't have to add chlorine under normal circumstances, all other maintenance and chemicals are still needed.
    5K gal, 16' x 48" AG Intex Ultra Frame, vinyl, Intex SWG 2500 GPH cartridge filter / pump combo (copper power wires removed)

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Help! SWG and chemical levels all wrong

    For a SWG, of any brand, you want the CYA level between 70 and 80. The only exceptions are if your pool is indoors or you use ORP based automation.
    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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