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Thread: First results with TF-100 and K-1766 salt test kits

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    emaschke84's Avatar
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    First results with TF-100 and K-1766 salt test kits

    Salt -3400ppm
    FC-5.0
    PH-7.8
    TA-110
    CH-50
    CYA-70-80
    CC-0
    TC 5.0

    I think I have everything at acceptable levels. Maybe dial down salt generator to lower FC to 4.0? Lower PH slightly? Or, rather than play around, leave as is. Thoughts?
    18'x35' 11k IG Vinyl 3.5'-5.5' with 9' sun deck and xtreme slide
    Pentair DE FNS-36, Pentair Superflow 1.5 hp, Simple Blue SWG 25000,
    Pentair Intellibrite 5G LED, Aquabot JR Z1, TF-100, K-1766

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    Donldson's Avatar
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    Re: First results with TF-100 and K-1766 salt test kits

    Keep an eye on your pH because your TA will conspire with your SWG to rise it. As you add acid your TA will drop and your pH should stabilize at some point.

    I wouldn't mess with your FC. You won't notice any difference between 4 and 5 from a comfort perspective and the extra buffer won't hurt anything. Happy swimming!
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
    Pool School - PoolMath - HIGHLY Recommended Test Kits

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    Mod Squad Jimrahbe's Avatar
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    Re: First results with TF-100 and K-1766 salt test kits

    I think you need to increase your FC, not reduce it. If you look at the CYA/FC chart for a saltwater pool I think 4 or 5 is the Minimum you want to be not the target FC.

    What I find is that the SWG setting is not a "Set it and Forget it" setting. I have to continually reset mine up or down depending on the time of year and the general weather conditions. If I set my SWG for an FC of 4 and then we have a couple of days of hot sunshine, my FC would easily sink below 3. (Although since we have not seen the sun in this part of Texas for a couple of weeks, I guess that is not something I'll have to worry about.)

    I guess my point is, you should be keeping your FC two or three points higher that the minimum requirement.

    Also.. is your CH really 50? That just does not sound right. I would think it would be in the 300 to 400 range.

    Something else to watch at this point is your pH. I also run a pH of about 7.8, but I find that if my TA gets too much about 110 or 120 that my pH will move up to 7.9 to 8.0 if I don't take some action. I suggest you just record your readings and see what happens. It will give you feel for how your pool works.

    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 Calder Spa.

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    emaschke84's Avatar
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    Re: First results with TF-100 and K-1766 salt test kits

    Rechecked the CH, definitely 50. (two drops it turned blue). As for the FC, by chart 4 is minimum, 5 is target, so I will keep it where we are at for now. I may try to lower PH a tad. Thanks. New this whole thing.
    Quote Originally Posted by Jimrahbe View Post
    I think you need to increase your FC, not reduce it. If you look at the CYA/FC chart for a saltwater pool I think 4 or 5 is the Minimum you want to be not the target FC.

    What I find is that the SWG setting is not a "Set it and Forget it" setting. I have to continually reset mine up or down depending on the time of year and the general weather conditions. If I set my SWG for an FC of 4 and then we have a couple of days of hot sunshine, my FC would easily sink below 3. (Although since we have not seen the sun in this part of Texas for a couple of weeks, I guess that is not something I'll have to worry about.)

    I guess my point is, you should be keeping your FC two or three points higher that the minimum requirement.

    Also.. is your CH really 50? That just does not sound right. I would think it would be in the 300 to 400 range.

    Something else to watch at this point is your pH. I also run a pH of about 7.8, but I find that if my TA gets too much about 110 or 120 that my pH will move up to 7.9 to 8.0 if I don't take some action. I suggest you just record your readings and see what happens. It will give you feel for how your pool works.

    Jim R.
    18'x35' 11k IG Vinyl 3.5'-5.5' with 9' sun deck and xtreme slide
    Pentair DE FNS-36, Pentair Superflow 1.5 hp, Simple Blue SWG 25000,
    Pentair Intellibrite 5G LED, Aquabot JR Z1, TF-100, K-1766

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