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Thread: Always shock visible algae?

  1. Back To Top    #1
    Whatrymes's Avatar
    Join Date
    May 2011
    E. Bridgewater, MA

    Always shock visible algae?

    Sometimes I find visible algae hiding around my ladder. Do I need to shock when I find this? Everything else is pristine.

    FC = 6.0
    CC = ~.2
    pH = 7.6
    TA = 120
    CH = 250
    CYA = 50
    ONCT = < 1.0
    . . . and sparklin' clear.

    15 X 30 X 3.6 Ester williams AGP
    10,800 gallons
    Haywood EC40C90 DE filter 1 HP pump
    TF-100 Test Kit

  2. Back To Top    #2
    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: Always shock visible algae?

    Yes, shock.
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    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

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  3. Back To Top    #3

    Join Date
    Feb 2008
    Flower Mound, TX

    Re: Always shock visible algae?

    You should also be sure that while you are shocking, you need to brush those nooks and crannies that allow algae to hide out with good frequency. Brushing better exposes the algae to the chlorine in the water.
    10K gallon IG gunite with waterfall; Pentair CC320P filter; WhisperFlo 2 HP pump
    TF Test Kits - Pool Math - Pool School
    "It depends."- JohnT

  4. Back To Top    #4

    Join Date
    Mar 2007
    San Rafael, CA USA

    Re: Always shock visible algae?

    If your ladder is removable, then remove it and hit the inside hard with bleach to kill off any algae inside. That should prevent the algae from coming back.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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