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Thread: Slugs cemetery in my crystal clear salt water

  1. Back To Top    #1

    Join Date
    Sep 2015
    Montreal, Quebec, Canada

    Unhappy Slugs cemetery in my crystal clear salt water


    I'm a newbie to pools and this site.

    We left the country for a few weeks and our pool became a green swamp. After a few days of shocking, supercholrinating (on SWG) and scrubbing, I managed to turn it pristine again. The only MAJOR issue now is the DISGUSTING slugs in it!

    So, I vacuumed, used the net, ran the filter and backwashed. It was beautiful slug-free again! Now, 4-5 days later the water is still pristine but there are slugs and slimy long thin things curled up at the bottom again 😳 WTH?? Why are there slugs? Where are they coming from? It's only 3 months I have this pool. I have trees around it...and the season is slowly changing....could this be (gulp) normal 😱?

    I wanted to enjoy my heated salt water a little longer since the weather is beautiful. But I won't step foot in that infested Petrie dish!

    10x20 inground (outdoor) salt water pool, vinyl w/ metal walls, 3-6 ft
    Hayward sand filter
    Hayward pump
    Hayward heater
    Hayward saltwater chlorine generator (auto)

  2. Back To Top    #2
    Mod Squad YippeeSkippy's Avatar
    Join Date
    Jan 2012
    'burbs of Augusta, Georgia

    Re: Slugs cemetery in my crystal clear salt water

    i get centipedes in my pool all the time. About 2 per day. They're attracted to the water I guess? They don't drink much and it takes just seconds to either scoop them out with the net or vacuum them up with our handy little portable vac. The water is still pristine looking.

    No harm, no foul. Now if it were frogs or something....*then* I would be upset.
    Maddie :) 12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Our pool build--> Our Pool Solved Our Sloping Yard Skippy's Cheap Pool Cooler -->Skippy's New Fountain

  3. Back To Top    #3

    TFP Guide

    Join Date
    Jul 2015

    Re: Slugs cemetery in my crystal clear salt water

    Hi Naonah, and Welcome to TFP,

    So you got yourself a slug problem in your pool. I'm so sorry. There's nothing any worse then having unexpected, and uninvited slimy guests swimming in your pool, so let's see if we can figure out a way to get them to stay away.

    1st thing do you ever see them getting in, or do you only see them after the fact?

    Having been a not so nice kid, I know full well what a box of salt will do to a slug in just a matter of seconds, so I suspect that is what the slimy long things are in there is the salt dissolving the slugs. YUCK.

    I have several things you can try to see if you can get them to stay out of the pool. These are actually remedies to keep them out of your garden but they should work for a pool as well.

    1)Try placing open beer cans with the beer still in them out away from your pool and the slugs will be drawn to that.(They will drown in the beer so you'll have to replace them as needed).

    2) Place Moistened Citrus peelings Oranges, lemons, grapefruits, lime peelings away from the pool area and the slugs will be drawn to those (You will have to collect the peelings with the slugs on them and drop them into a bucket of Salt water to kill them).

    3) Buy a Bag of Diatomaceous Earth (I would recommend the Food Grade on this) which is completely safe for human, and pets but will kill slugs, spiders, and other types of insects because it causes them to dry out. Make a larger perimeter circle around your pool area using the DE, and you can also make a circle around the actual pool itself if needed.

    CAUTION: (Avoid walking barefoot in the DE as it does contain fragments of mica and may be sharp to your feet. Attempt to avoid tracking the DE into the pool). ALSO DE will not only kill the bad bugs, but will also kill the beneficial insects too.

    4) Pour dried used coffee grounds in an area around your pool as slugs hate Caffeine, and this should send them the other direction.

    5) Put a line of salt around the pool area to dissolve them before they make it to the pool. (Caution: Salt can be damaging to soil and plants)

    6) Place several tablespoons of cornmeal in a glass mason jar and lay it on it's side in the area the slugs are at. The cornmeal when eaten by the slugs will swell up in them.

    7) Avoid watering at night if you have plants around the pool. It is best to water them of the morning instead so they will be dry at night when the slugs usually come out.

    8) If you have an out of the way area place a large piece of cardboard, piece of wood etc. that slugs like to hide under and go collect the slugs from under them, then place the slugs in salt water, or relocate them to an area far away from your house.

    9) Plant plants that slugs don't like either in the ground or in a planter around the area you don't want them. Here is a list
    " Grow plants that deter slugs. Certain plants keep slugs away because of their taste, texture, or toxins. Plant these in a barrier around the entirety of your garden, or keep one near each other plant. These are not 100% immune, but they will deter many slugs for no effort besides the initial planting. Try the following species:[14][15]
    • Herbs: ginger, garlic, chives, mint, and chicory.
    • Vegetables: bitter greens are generally less appealing to slugs than sweet greens. Try planting kale, spring cabbage, or sprouting broccoli.
    • Hosta varieties with blue leaves are more resistant.
    • Flowers for full shade: Astilbe, Dicentra, Digitalis (foxglove), Lobelia, Viola (some pansies and violets). Also Ranunculus (buttercups) and Vinca, but these spread rapidly.
    • Flowers for partial shade: Phlox, Campanula, Hemerocallis. Also Mentha, but this spreads rapidly".

    WARNING ensure these plants are pet friendly too if you have pets.

    10) Feed the birds. Get some bird feeders and put them out to attract the birds to your house as they love to eat slugs.

    11)They do sell slug pellets, but these need to be kept out of reach of pets, so if you have dogs, or cats, I wouldn't recommend their use.

    12) Cover you pool during peek times that the slugs are getting in if you know when that may be.

    Well that's all the suggestions I have. I hope one of these will rid your beautiful pool of those yucky slugs. Have a wonderful night .

    Most of the above information was paraphrased, or quoted from the following 2 links.
    24' Round x 4.5 ft deep AGP (15,200 Gallons), Vinyl Liner, Hayward Vari Flo XL Sand Filter- (model SP0714T1),
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  4. Back To Top    #4
    aussieta's Avatar
    Join Date
    Jan 2014
    Langwarrin, Victoria, Australia

    Re: Slugs cemetery in my crystal clear salt water

    only way to prevent this is to keep all garden well away from pool
    slugs and worms come out to play at night
    when the sun comes up they head for a damp place
    your pool being the dampest place they all climb in
    now slugs and worms are not very bright
    it's only once they've climbed in that they remember they can't swim
    SWG inground peanut shaped eco-bright concrete pool
    50,000 litres 13,000 gallons
    Lincoln Salt Chlorinator, 25 gram cell Sand Filter with glass media
    Taylor K2006-C test kit, Taylor K-1766 salt test, Dolphin M500 pool cleaner
    are you taking care of your pool or is the poolshop taking care of you

  5. Back To Top    #5
    Swampwoman's Avatar
    Join Date
    Apr 2012
    Grand Rapids, MI

    Re: Slugs cemetery in my crystal clear salt water

    Great post, Crackerjack...I have a lot of slugs coming from my terrace
    For the pool, we've historically just coexisted I run the robot before I swim...Naonah, do you have a robot?
    In ground vinyl Grecian, 24k gal, Hayward 220t sand filter, VGreen VSP 165, Hayward SWG, Raypak NG 265k heater, dolphin m4.
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  6. Back To Top    #6

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    PAGirl's Avatar
    Join Date
    Jun 2012
    Central PA

    Re: Slugs cemetery in my crystal clear salt water

    MyMIL used to put small dishes of beer (no kidding!) out. The slugs were attracted to it. They would climb in, imbibe, and pass out for good. Lol.
    26' X 52" Intex Ultra Frame. Intex Sand Filter
    26' X 52 Intex Ultra Frame Install
    You can lead a horse to (clear) water, but you can't force him to swim in it!

  7. Back To Top    #7

    TFP Guide

    Join Date
    Jul 2015

    Re: Slugs cemetery in my crystal clear salt water

    Thank you Swampwoman,
    I can certainly understand where attempts to coexist in a pool would certainly be difficult to deal with. I hope some of the suggestions helps the OP to eliminate their problem. Have a wonderful night.
    24' Round x 4.5 ft deep AGP (15,200 Gallons), Vinyl Liner, Hayward Vari Flo XL Sand Filter- (model SP0714T1),
    TFTestkits , PoolMath , Pool School, RECOMMENDED LEVELS, SLAM & the Chlorine/CYA CHART. Support this Site! TFP Totally Rocks.

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