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Thread: Sea Water Pool

  1. Back To Top    #1

    Join Date
    Nov 2015
    Long Island, Bahamas

    Sea Water Pool

    The base is coral - - at least 20 feet thick and abuts the atlantic ocean on Long Island in the Bahamas. Fresh water is costly but the ocean water is free.
    Looking for information on how to do this.

  2. Back To Top    #2

    Join Date
    Nov 2015
    Long Island, Bahamas

    Ocean water pool ?

    I have oceanfront property in the Bahamas. Fresh water is scarce so i want to use ocean water in a pool that i will construct set into a coral outcrop that is 20+ feet thick. I understand the filter system must tolerate a high salt environment.

    What are the best materials to use for the pool and deck in this environment?
    Is there a chlorine generator that is suitable for this?
    Will periodic chemical shocking keep the water clean?
    Are there automatic pool cleaners/scrubbers that are suitable for ocean water use?

    Any guidance will be greatly appreciated.


    Quote Originally Posted by JasonLion View Post
    There are "true saltwater" pools and then there are SWG pools. A true saltwater pool is filled with ocean water. These are most common on cruise ships or pools right next to the ocean. A SWG pool has perhaps 1/10th the amount of salt in it that there is in ocean water. An ocean water pool requires using materials that are safe at that salt level. For example the normal copper heat exchanger in a typical pool heater won't work for long with ocean water.

  3. Back To Top    #3
    Mod Squad JVTrain's Avatar
    Join Date
    Feb 2014
    Central Minnesota

    Re: My Bahamas ocean front property needs an ocean-fed in-ground pool.

    You're not likely to find much input from folks here as that's a very specialized request and using ocean water with very high salinity has some special considerations because of how corrosive it would be to normal pool surfaces and equipment. You're best served talking to a contractor in the area who may have some insight or experience with this.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
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  4. Back To Top    #4

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    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: My Bahamas ocean front property needs an ocean-fed in-ground pool.

    A big +1 to what JV said. You need to talk to someone with experience. We love watching pool builds and yours would be unique so keep us posted when you get started.

    Asking the same question in different forums is quite confusing to every one. I am moving this under your original post.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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  5. Back To Top    #5
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Is a Salt Water pool same as sea water???

    Here's my out of the box take on it. If I were that close to the ocean and had the resources, I wouldn't worry about sanitation and I would only coarsely filter the incoming water. I would design a system that would turn over the pool volume at least every two hours and just pump ocean water through the pool whenever it's being used. This probably won't work for a public pool, but it should for a private pool.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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  6. Back To Top    #6
    Mod Squad Patrick_B's Avatar
    Join Date
    Jun 2011

    Re: Sea Water Pool

    I'd second the high turnover option rather than trying to sanitize. As for SWG that makes Chlorine in Sea Water, they don't exist. SWG's will not work with that much salinity.
    TFP Moderator
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