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Thread: Pool Math Question VS Recommended SWG Level Article

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    Join Date
    Jan 2014
    Location
    Naples, FL
    Posts
    36

    Pool Math Question VS Recommended SWG Level Article

    Hello,

    Easy question. One of the first articles I ever read on TFP was the "Recommended Levels for SWG" and I've been targeting those readings to a tee. When I enter in my readings which are :

    FC = 6.0
    CC = 0
    pH = 7.5
    CYA = 70
    CH = 300
    ALK = 70

    In addition, I also select Type of Pool = Plaster, Chlorine Source = SWG and Method, of course = Trouble Free Pool.

    Here's my question, it says my target FC on Pool Math should be 5-10 but the article says 3-5. The reason I ask is, I've been trying to dial in my % on the Salt Water Generator so it doesn't produce more than 5.0. However, if 5-10 is the way to go, then I could stop driving myself nuts with adjusting the run time, etc.

    The other question, and this might not be worth worrying about but, CSI. I am guessing that the number Pool Math generates for Target Level, I want to stay at or as close to as possible as that Target Number correct?

    Thanks everyone for your help!
    Size and Type : IGP, 7500 Gallons
    Finish: Wet Edge Satin Matrix Finish (pebble), Cartridge: Unicel Model C-8409, 12 PSi, Pump: 1.5 HP A.O. Smith Model USQ1152 (not sure if it's two speed or variable), Pool Date Remodel: May 2009, Accessories: SWG Auto Pilot Digital Nano Model 75041, Rock Waterfall

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    JasonLion's Avatar
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    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Pool Math Question VS Recommended SWG Level Article

    Pool Math has some default target levels, but they are generic and not optimized for a SWG pool. Take the target levels from the SWG article (or the correct table in Pool School) and plug them into Pool Math. That is the same thing that is happening with FC target level, you are getting the non-SWG FC target from Pool Math, instead of the SWG targets.

    It is really best to completely ignore CSI unless you have one of the rare situations that make it important, like uncontrollably high CH levels.
    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

  3. Back To Top    #3

    Join Date
    Jan 2014
    Location
    Naples, FL
    Posts
    36

    Re: Pool Math Question VS Recommended SWG Level Article

    Thank you Jason!! I will stick to the article and ignore CSI!
    Size and Type : IGP, 7500 Gallons
    Finish: Wet Edge Satin Matrix Finish (pebble), Cartridge: Unicel Model C-8409, 12 PSi, Pump: 1.5 HP A.O. Smith Model USQ1152 (not sure if it's two speed or variable), Pool Date Remodel: May 2009, Accessories: SWG Auto Pilot Digital Nano Model 75041, Rock Waterfall

  4. Back To Top    #4
    bobodaclown's Avatar
    Join Date
    Apr 2011
    Location
    Lakeland, FL
    Posts
    2,351

    Re: Pool Math Question VS Recommended SWG Level Article

    The CSI number I feel is more important with a SWCG. That number will give an indication of how quickly your SWCG Cell may need cleaning due to calcium build up. I tend to run a slightly negative CSI and have not needed to clean my cell. It's a clear housing and I can see the cell.

    Living in Florida you're more than likely need to increase your pump run time in the summer and lower it in the winter for max energy savings.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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