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  1. #1
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    Default Re: Murky algae pool

    Readings last night prior to adding bleach: chlorine: 3.0. PH: 7.2

    This morning: chlorine: 5.0. PH: 6.8
    PH is dropping. Do I need to worry about it? Using leaf rake and vacuuming to waste.
    18x36 IG vinyl, Hayward Sand Filter S220T, 1hp pump.

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    Default Re: Murky algae pool

    Retest pH this evening, and if it's still low, add 1/2 box of borax.

    What does your water look like?

  3. #3
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    Default Re: Murky algae pool

    I will have to get my son to test the pool this evening (working out of town until tomorrow) and add the bleach/possible borax. This morning the color was a pale light green- getting closer! (It has not been this light with any of the shock etc I was using before. I can make out the second step now. The first step the water looks clear except for what I am suspecting is mustard algae (or dead algae but it has a brown color to it). When I vacuum or use the leaf rake along the bottom of the pool, you can see a cloud form in the water.

    Jan
    18x36 IG vinyl, Hayward Sand Filter S220T, 1hp pump.

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    Default Re: Murky algae pool

    Quote Originally Posted by janbogus View Post
    When I vacuum or use the leaf rake along the bottom of the pool, you can see a cloud form in the water.
    Sounds like mustard algae.

  5. #5
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    Default Re: Murky algae pool

    Levels this evening are chlorine 3.4 and pH 7.2. I figure I've had a couple different types of algae. Will have to read up on the site on how to get rid of the mustard algae as the green disappears.
    18x36 IG vinyl, Hayward Sand Filter S220T, 1hp pump.

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    Default Re: Murky algae pool

    Received my Taylor 6200 kit today. Took new readings and if I did the analysis correctly, I got the following levels:
    FE: 1.2, CC: 2.2 Ph: 7.0, Alk: 100, CYA: 42, and CAL: >1100.

    I added two more gallons of bleach. I did not add the borax the other day because the levels had risen. Looks like I need to add it now. The pool is a hazy, cloudy blue. I can make out the jets and the third step in the shallow end. When I started to vacuum to waste tonight, the billowing clouds returned. So it looks like the mustard algae is still there.

    What would you suggest next?
    18x36 IG vinyl, Hayward Sand Filter S220T, 1hp pump.

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    Default Re: Murky algae pool

    Two questions:

    1. Are you sure your CH (calcium hardness) is 1,100?

    That's 110 drops of reagent! If you haven't already, watch the Taylor videos: http://pool9.net/tk-guide/ and http://pool9.net/tk-interfere/

    Also, please test the pH, TA and CH of the water you filled your pool with -- presumably your house water, but upstream of any softener, etc.


    2. Can you explain the sequence of the "billowing clouds"? Where were these clouds billowing from?

    I don't understand, since vacuuming to waste should have ZERO effect on your pool water, since the discharge water is going out the backwash line.

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