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Thread: Worm Stains

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    Worm Stains

    Apparently worms plentiful this year, and they're enjoying our pool a little too much. They are staining the bottom of my pool, and I'm looking for a way to remove the stains from them. I know in the past with stains like these, usually time does the trick, however in this case, after vacuuming up about 50 worms today, we're thinking we'd like those stains gone quicker if possible.

    What, in your experience, is the best thing to purchase to use to get these stains up? Normally we do use a sequestrant because we are on well water and do have some metals in our water that I'm pretty sure of. I'm not sure if I should use some in the pool now and if that would help at all with these types of stains.

    Thanks for the help!
    13,500 gallons
    Sand filter
    IG
    Plaster
    TF-100

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    Mod Squad kimkats's Avatar
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    Re: Worm Stains

    Have you tried putting a puck on them? Just watch your CYA to make sure it is not too high.

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    Re: Worm Stains

    I haven't tried putting a puck on them. Maybe just rub it on them?
    13,500 gallons
    Sand filter
    IG
    Plaster
    TF-100

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    Mod Squad kimkats's Avatar
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    Re: Worm Stains

    I would just let the puck sit on one for 5 mins or so. If that does not anything try 10 mins ect.

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    Mod Squad tim5055's Avatar
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    Re: Worm Stains

    No worms here by the lake, frogs yes - worms no.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Worm Stains

    You're lucky, Tim! I believe they're earth worms. They love our pool apparently. Frogs too, of course, but usually I can save those. The worms just have to die at the bottom and be manually vacuumed out each day because our Polaris is on the fritz. Ugh.
    13,500 gallons
    Sand filter
    IG
    Plaster
    TF-100

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    Mod Squad tim5055's Avatar
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    Re: Worm Stains

    Quote Originally Posted by DanaSC View Post
    You're lucky, Tim! I believe they're earth worms. They love our pool apparently. Frogs too, of course, but usually I can save those. The worms just have to die at the bottom and be manually vacuumed out each day because our Polaris is on the fritz. Ugh.
    Well, I just got done mowing the grass and I did have a bunch of dead earth worms along the edges of the driveway and sidewalks. None have ever made it into the pool.

    I have a couple of frogs who make a nightly visit, leave deposits in the deep end and are able to get out of the pool on their own. I just refuse to get up at 3AM to confront them.....
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Worm Stains

    What is a "puck" I too have a considerable area of worm stains
    Windowman
    West Chester, PA
    25year old 36,000 Gunite with new quartz finish (2014), 1 1/2hp Sta Rite pump, 60sf Pentair DE filter,
    1hp Polaris 380 cleaner, SJ45 Circupool Salt Water Generator

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    Re: Worm Stains

    A puck is a chlorinated tablet. I never tried that because eventually the stains did disappear. Wish I could say exactly what makes them disappear, but I never figured that out unfortunately.

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    Re: Worm Stains

    Worm stains are usually black. Some kind of organic decomposition product. I think that the black might be partly due to bacteria. Slam and brushing usually works.

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    In the Industry


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    Re: Worm Stains

    I have come across a potential fix for this problem.
    Sodium bisulfate in a sock or rag rubbed directly on the stain is getting rid of it. I have only tried this once but it dramatically reduced the color of the stain. Sodium bisulfate is a PH reducer, so I am taking the approach in multiple daily steps as to not reduce the ph to far too fast.
    Share your results if you experience the same results too.

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    needsajet's Avatar
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    Re: Worm Stains

    I've seen this because we get a fair number of worms after a good rain. The suction cleaner collects the dear departed but a few times I had a curly little stain. I learned to just give it a quick brush. It doesn't remove the stain, but if I look again in 4 or 5 hours, the stain has magically disappeared. When I didn't brush, it took a few days, or may have been there until I next brushed.

    So my theory is that it's just algae that was temporarily protected from the chlorine by the worm's dead body. Don't hold me to it, because I may never be available for experiments with bloated worm bodies.
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    In the Industry


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    Re: Worm Stains

    Here are 2 pics of a before and after attempt with the ph minus or Sodium Bisulfate. This is only the first application, and it is working. I will go at it some more.


    PF
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