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Thread: Algae but no cc's?

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    Algae but no cc's?

    Just wondering why I have an algae bloom but am not registering any cc's?

    I got a bit lazy with the cooler temps and kids going back to school (nobody using the pool) and got a slight algae bloom - water is greenish and cloudy. Of course I am slamming and brushing to take care of it. Yesterday when I tested I got ph 7.6, fc 5, cc 0, cya 40. Side note- since I bumped my CYA from 30 to 40 my chlorine levels have been holding a lot steadier; I find I need to use less bleach.

    Anyway, wouldn't I be registering some cc's?
    10,000 gallon inground, gunite, 500lb sand filter. Brand new to this pool thing.

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    Mod Squad jblizzle's Avatar
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    Re: Algae but no cc's?

    Seeing algae does not = seeing CC.
    That is why there are more than 1 criteria to know when to stop the SLAM process.

    I take it you started the SLAM after that test result of only 5ppm?
    Jason, TFP Moderator
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    Re: Algae but no cc's?

    Ah, I see.

    Yes, yesterday was very warm (90s) and kids wanted to get in the pool after school. I went ahead and let them (like I said, fc was 5), then started the SLAM process when they were done. Yes, they took hot showers afterward , and they weren't in very long.
    10,000 gallon inground, gunite, 500lb sand filter. Brand new to this pool thing.

  4. Back To Top    #4
    linen's Avatar
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    Re: Algae but no cc's?

    Algea is not going to hurt them one bit and 5 ppm FC (at 40 ppm cya) would have killed any person to person transmittable diseases (bacteria, viruses). The larger problem when swimming during/before the SLAM process is the inability to see swimmers under the water.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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