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Thread: Foam!

  1. Back To Top    #1

    Join Date
    Jun 2009
    Location
    Ithaca, NY
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    13

    Foam!

    I run a two pools and a hot tub at a fitness center. The spa had foam issues about 4 years ago so we turned off the air blowers and now just run water jets. Since the air blowers were turned off, foaming has not been an issue until about 3 weeks ago it suddenly started foaming badly and I am at my wits end trying to figure out why. The spa is chlorinated with calcium hypochlrite and is drained once per week and shocked once per week. The foaming returns immediately after the spa is re-filled so draining it more often doesn't seem like it would fix it. Here is what I have tried so far:
    1st, I tested the source water's calcium hardness and found it was only 80ppm so I've been adding calcium hypochloride to bring the hardness up to ~200ppm immediatly after the spa is re-filled. This seems to marginally reduce the foaming for a few hours after the spa is re-filled.
    2nd, I've disinfectd and scrubbed the entire spa to try to remove any contaminants.
    3rd I also soaked the sand filter with a filter cleaning product to remove an contaminants from the filter.
    Any Ideas?!?

  2. Back To Top    #2

    Join Date
    May 2007
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    South Central NJ
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    Re: Foam!

    What's the bather load?

    How is the spa fed chlorine. I know you're boosting with cal-hypo but for everyday chlorination?

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

  3. Back To Top    #3

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    Re: Foam!

    We get approxamately 50 bathers a day; the spa is fed using Pulsar Plus cal-hypo briquettes via a Stantrol automated HRR computer controler. I use powederd cal-hypo to shock once per week.

  4. Back To Top    #4

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    Re: Foam!

    50 bathers per day is a lot of body waste and that is the likely cause of the foaming. With that many, I'd be shocking every night with bleach or chlorinating liquid. I would also want an Ozonator on there. Water changes would be needed every 10 days to 2 weeks too.

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

  5. Back To Top    #5

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    Jun 2009
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    Ithaca, NY
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    Re: Foam!

    Shocking and draining have not reduced the foam at all; it returns as soon as the water jets are turned on even if the spa has been drained or shocked the night before.

  6. Back To Top    #6

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    South Central NJ
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    Re: Foam!

    !) What equipment is you filter system comprised of?
    2) When was the last decontamination?
    3) What are the chem levels of your fill water and your spa water?

    Are your guests asked to shower first? Foaming is almost always due to bather wastes.

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

  7. Back To Top    #7
    AClogston's Avatar
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    Mar 2011
    Location
    Lincoln, NH
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    61

    Re: Foam!

    I've been having the same issue. I wish people would shower more often before using the spa, but hardly anyone does. No matter how many signs are posted. I've just been doing partial drains twice a week, keeping up on my filter cleaning, and living with it. I know the water's clean and that's enough peace of mind for me.

    If you find a solution Tmaragni, pass it along.
    -Alex
    Outdoor Chlorine Pool/Spa (~100' from pump room):(35,000gal IG, plaster, 2 Triton TR-140 sand filters, 2 2HP pumps),(1,200gal IG, plaster, Triton TR-140, 2.5HP pump [circ.], 2 2HP pumps [jets])
    Indoor Bromine Pool/Spa:(24,000gal, plaster, Triton TR-100, 1.5HP SVRS-equipped pump),(3,200gal w/ 3 waterfalls, plaster, Sta-Rite System 3 cartridge filter, 3HP pump [circ.], 3HP pump [jets])

  8. Back To Top    #8
    Lershac's Avatar
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    May 2007
    Location
    Baton Rouge, LA
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    1,215

    Re: Foam!

    I would bet the massive foaming incident was brought on by someone getting in who had slathered some personal product on, and its now in your spa and water.

    I would look into switching to a cartridge filter system and a couple of extra sets of cartridges that you can soak and clean in rotation.
    (DIY):16K Gal 20X30 rectangular IG Gunite, w/spa, CCP 520 filter,2 Pentair VS pumps, 400KBTU Pentair gas heater, Heat Pump for cooling, **update5.25.2013** added an intellichem with acid pump that will control existing SWG. My Build Thread Here

  9. Back To Top    #9
    AClogston's Avatar
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    Mar 2011
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    61

    Re: Foam!

    I'm not sure about Tmaragni, but I do just that, and I soak the set not in use in bleach overnight. Doesn't seem to affect the foam much at all.
    -Alex
    Outdoor Chlorine Pool/Spa (~100' from pump room):(35,000gal IG, plaster, 2 Triton TR-140 sand filters, 2 2HP pumps),(1,200gal IG, plaster, Triton TR-140, 2.5HP pump [circ.], 2 2HP pumps [jets])
    Indoor Bromine Pool/Spa:(24,000gal, plaster, Triton TR-100, 1.5HP SVRS-equipped pump),(3,200gal w/ 3 waterfalls, plaster, Sta-Rite System 3 cartridge filter, 3HP pump [circ.], 3HP pump [jets])

  10. Back To Top    #10
    Lershac's Avatar
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    Re: Foam!

    I dont know that I would soak them in bleach. maybe some really diluted dishwashing detergent followed by a really good rinse.

    He has a sand filter per his first post. With such a high bather load I would think sand would be tough to maintain and keep clean.
    (DIY):16K Gal 20X30 rectangular IG Gunite, w/spa, CCP 520 filter,2 Pentair VS pumps, 400KBTU Pentair gas heater, Heat Pump for cooling, **update5.25.2013** added an intellichem with acid pump that will control existing SWG. My Build Thread Here

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