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Thread: Chemicals levels seem fine - algae in view finder

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    jgofnj's Avatar
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    May 2013
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    Chemicals levels seem fine - algae in view finder

    I have been using the TFP method for 2 years and never had any issues. Pool water looks sparkling clear, but I noticed green mold/algae?? in my filter's view finder. Since my pool is so clean, I do need to backwash except I clean the entire filter once during the summer. I use the TF-100 test kits, below are my latest readings:

    FC - 8.5
    TC - 8.5
    PH -7.4
    TA - 95
    CH - 240 (vinyl liner)
    CYA - 85

    Should I be concerns about the green algae in the view finder? I am assuming this is green algae.
    20,000 gal, In-Ground (built in 2007)
    Vinyl lining / 1HP Hayward SuperPump / Hayward Pro-Grid DE Filter / Hayward Gas Heater / Liquid Chlorine,Bleach (4 Gallon Liquidator)
    Dohney Discovery Robot
    Testing Method: TFTestkits/TF-100

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    Mod Squad jblizzle's Avatar
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    Re: Chemicals levels seem fine - algae in view finder

    No water is entering the view finder unless you are backwashing. So any water sitting in there may develop algae. Not a big deal. You can unscrew the view finder and clean it out if you want.
    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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    jgofnj's Avatar
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    Re: Chemicals levels seem fine - algae in view finder

    That's what I figured, and that's exactly what I did. Makes sense, since it is siting in the sun week after week and there is no chlorine in there since like you said, it's not the pool water unless I backwash.
    20,000 gal, In-Ground (built in 2007)
    Vinyl lining / 1HP Hayward SuperPump / Hayward Pro-Grid DE Filter / Hayward Gas Heater / Liquid Chlorine,Bleach (4 Gallon Liquidator)
    Dohney Discovery Robot
    Testing Method: TFTestkits/TF-100

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    Kiss4aFrog's Avatar
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    Re: Chemicals levels seem fine - algae in view finder

    If you've been following the TFP method for 2 years why do you have trichlor in your signature and a CYA level of 85
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. ? too cold
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
    TF-100, Best test kit - TFTestkits.net
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    Re: Chemicals levels seem fine - algae in view finder

    For vinyl IG pool, your CYA is a bit on the high side. If you cut it down by 1/3 or so, you'd need a lot less bleach to maintain your pool



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