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Thread: Sanitizer levels low. Where is al this foam coming from?

  1. Back To Top    #1

    Join Date
    Jun 2015
    Location
    Alaska
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    2

    Sanitizer levels low. Where is al this foam coming from?

    Hello,

    This is my first time posting here, I'm hoping someone with more experience can help me fix a foaming problem on Baquacil. I'm in charge of taking care of a 1400 gallon swim spa. It uses the Baquacil CDX system.

    I see from googling that Baquacil is kind of problematic but I can't switch to something else at the moment so I need some info on how to fix the foaming.

    It happens when the jets are on, but when the water is still it looks fine!




    The dealer said that it might be white mold but this doesn't look like any of the photos on the internet for that.
    Here are some other figures:
    pH 8
    Calcium Hardness 128
    Alkalinity 64
    Oxidizer 228
    Copper 0.1
    Unbalanced

    The thing is that the Sanitizer and Algistat is at 38 (from the dealer testing) so it's not high I thought that foaming problems where supposed to happen when the Sanitizer was high?



    I really hoe someone can give me some advice.

    Thanks

  2. Back To Top    #2

    Join Date
    Jun 2015
    Location
    East Hampton CT
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    Re: Sanitizer levels low. Where is al this foam coming from?

    My guess? You over did it on algaecide, algaecide, and more algaecide. IMO that should be the last chemical you add on that system.

    Your only remedy is to scoop it out. I'm changing a 21k gallon pool over to chlorine, but I had Baquacil for over 7 years.

    I'd imagine you can drain and start over, but you said you can't change over. So I assume 1) you don't have access to a water source, or 2) it needs to be available immediately everyday.
    Chris
    17' x 35' outdoor in-ground Grecian shaped w/ vinyl liner. ≈ 21,000 gallons. Hayward S-200 Sand Filter and 1 HP Hayward Super-pump. Other Accessories: slide, light, ladder, fiberglass stairs, TF-100. Baquacil Conversion - June 2015, SLAM How-to, Chlorine/CYA Chart

  3. Back To Top    #3

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    Jun 2015
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    Alaska
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    Re: Sanitizer levels low. Where is al this foam coming from?

    Quote Originally Posted by Husky25 View Post
    My guess? You over did it on algaecide, algaecide, and more algaecide. IMO that should be the last chemical you add on that system.

    Your only remedy is to scoop it out. I'm changing a 21k gallon pool over to chlorine, but I had Baquacil for over 7 years.

    I'd imagine you can drain and start over, but you said you can't change over. So I assume 1) you don't have access to a water source, or 2) it needs to be available immediately everyday.
    Thanks for responding. Husky. In this system the Algaecide is "Baquacil 1: Sanitizer and Algistat" right? That's testing at 38ppm and it's in the range of 30-50ppm that the dealer tests for.


    I wish I could switch to chlorine but I can't at the moment and yes water is kind of an issue.
    Phoenix Swim Spa
    1400 Gallons
    Baquacil CDX

  4. Back To Top    #4

    Join Date
    Jun 2015
    Location
    East Hampton CT
    Posts
    375

    Re: Sanitizer levels low. Where is al this foam coming from?

    Sanitizer & algistat should be 50 ppm or higher, but foam is normally the result of an algaecide issue in my experience. White mold will make your water cloudy and is difficult to get rid of with bq chemicals (incidentally, that is the reason I am changing over. I couldn't get rid of it.).

    That foam can probably be slowly scoped out with a pool skimmer.
    Chris
    17' x 35' outdoor in-ground Grecian shaped w/ vinyl liner. ≈ 21,000 gallons. Hayward S-200 Sand Filter and 1 HP Hayward Super-pump. Other Accessories: slide, light, ladder, fiberglass stairs, TF-100. Baquacil Conversion - June 2015, SLAM How-to, Chlorine/CYA Chart

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