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Thread: How can I get rid of the dead algae?

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    How can I get rid of the dead algae?

    Previously, my pool had quite some yellow algae. The water was very cloudy.
    I shocked it twice, and have been maintaining chemicals at the correct level. (FC 2~3, CYA 20, PH 7.5).
    Now the water is crystal. The algae are dead (no CC at all). However, there are still some black dead algae at the bottom and wall of the pool as in the attached picture.
    I tried to remove it with brush, but it didn't work.
    What can I do? Should I just wait for more time so that they disappear automatically?

    Thanks!
    Attached Images Attached Images

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    Mod Squad tim5055's Avatar
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    Re: How can I get rid of the dead algae?

    Have you passed an Overnight Chlorine Loss Test? Looking at the photo it appears not to be dead algae.

    What you describe is not how we advocate eliminating algae, which we call a SLAM. Different from shocking a couple of times and you are sure everything is dead at the end..
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: How can I get rid of the dead algae?

    Yes, I did test it. The overnight chlorine lost was less than 1ppm.

    If they are still alive, should I raise FC to 10 again (given the cya is 2), or just keep FC at 3 and they will die eventually?

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    Mod Squad jblizzle's Avatar
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    Re: How can I get rid of the dead algae?

    If you see algae, then you have failed one of the 3 criteria to stop the ShockLevelAndMAINTAIN Process ... you pool is not "clear".

    CC and having algae can be exclusive of each other.
    Jason, TFP Moderator
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    Mod Squad kimkats's Avatar
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    Re: How can I get rid of the dead algae?

    Not done yet Keep up the SLAM until it is GONE!

    Have you tried putting puck on the spots?

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    Patrick_B's Avatar
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    Re: How can I get rid of the dead algae?

    Based on this picture, you still have live Aglae sorry...

    SLAM time is needed for this one.
    TFP Moderator
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