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Thread: Surfergirl

  1. Back To Top    #1

    Surfergirl

    Hello everyone:

    I have been reading a great deal on this site, and just barely started slamming my pool.

    Here are my pool specs:

    about 28,000 gallons
    IG plaster
    date: 1984
    cartridge filter, 520 sq ft, 150 gal/min, model # CCP520 Pentair
    Pump 2HP 2speed
    heater mastertemp 400 Pentair
    spa
    dolphin deluxe 4

    My test results:

    FC; .5ppm
    CC; 1ppm
    pH; 7.5
    TA; 70-80
    CH; 550
    CYA; 30


    My water is very clear.

    We started maintaining our pool ourselves in May, taking over for a pool maintenance company. We have had algae very frequently each summer (this is the third summer of owning our home/pool) and decided to take matters into our own hands. We live in Houston, and so maintain the pool year round. We found our filters were filthy, even though the pool company said they had been cleaned. We replaced all four filters, and using lots of Power Powder Plus, took care of the algae, or so it seemed. Ever since we began caring for our pool in May, our FC levels have been almost zero or near zero. Three or four weeks ago, we noticed spots like moles on the bottom of the pool, which we guessed are black algae. They scrape off. We had a few spots on the steps the whole time we have lived here, but nothing spread until recently.

    My questions are:

    Is my target shock level 12, or does it need to be a lot higher like the shock level for mustard algae?

    Could I get some information about getting rid of black algae?

    I have scraped spots off with a chlorine puck, and we even rented scuba equipment and went after spots on the bottom with a stiff nylon brush...How much of this is necessary to eliminate it?

    Thank you very much,

    Vickie
    28K IG plaster pool, 4 cartridge filter, 520 sq ft, 150 gal/min Pentair CCP520, Pump 2HP 2speed, Mastertemp 400 heater, dolphin deluxe4, spa, built 1984

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
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    Re: Surfergirl

    Welcome to TFP!

    SLAM level is 12ppm based on the chart. Black algae just needs to be brushed to expose it to the chlorine.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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  3. Back To Top    #3

    Re: Surfergirl

    Thank you Jason. I have read so much about black algae and how it is so awful, and how you never get rid of it completely. Is this true?
    28K IG plaster pool, 4 cartridge filter, 520 sq ft, 150 gal/min Pentair CCP520, Pump 2HP 2speed, Mastertemp 400 heater, dolphin deluxe4, spa, built 1984

  4. Back To Top    #4
    Patrick_B's Avatar
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    Jun 2011
    Location
    Midland TX
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    15,001

    Re: Surfergirl

    Welcome to TFP Vickie, and congrats on taking over your own pool.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

  5. Back To Top    #5
    Mod Squad jblizzle's Avatar
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    Re: Surfergirl

    You can get rid of it. Just likely need a lot of brushing and scraping while at SLAM level.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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