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Thread: Salt water pool suction

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    Join Date
    Jun 2012
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    St Pete FL
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    45

    Salt water pool suction

    OK so what has started out as me taking care of one friends pool has now turned into several!!! Which is OK I don't mind, I like being outside and enjoy (most of the time) the work and have learned quite alot.
    My problem or question is do salt water pools typically have less suction when using the vac head, then fresh water pools? I would think it depends on the size of pump you have.
    I am taking care of 2 salt water pools and am having the hardest time trying to suck the debris and sand out of them. I have tried to adjust valves and mian drains and etc, but still things are not are strong as the other pools. Did not know if there was any corellation. I am going to try and take pics today and post later in case someone has suggtestions on if the valves I am trying to adjust are the correct ones. I also need to see what size pump each pool has.
    I know you will ask so here is what info I have on the pools.
    15,000 gal pebble tec paper cartridge filter
    20,000 gal marcite paper cartridge filter
    THANKS
    5,000 gal Fiberglass paper cartridge filter, autochlorinator, BBB
    20,000 gal Pebble Tec paper cartridge filter, BBB
    15,000 gal Pebble Tec, DE filter, autochlorinator, BBB
    20,000 gal Pebble Tec, sand filter, BBB

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
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    Sebring, Florida
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    30,084

    Re: Salt water pool suction

    My problem or question is do salt water pools typically have less suction when using the vac head, then fresh water pools?
    Having a salt pool has zero effect on the psi and flow of a pool's circulatory system.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

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    Jun 2012
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    St Pete FL
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    Re: Salt water pool suction

    THANKS I didn't think it did but it seemed too coincidental.
    They typically have the main drain open, the auto cleaner valve off and the suction valve for return ports on. That leads to little or no suction at all. I now find if I close the main drain, turn the auto cleaner valve on and the suction/return port valve halfway closed I will finally get better suction. Although I have to use the hose and side port for the auto cleaner to vaccum. The regular hose and skimmer return port are the ones with little to no suction. I have tried all kinds of combinations for this but....?
    Maybe when I have another chance I will try main drain off, suction valve open, and auto cleaner valve off. I am sure I have tried this at least once but won't hurt to try again so I can use the correct hose.
    Any other comments or suggestions will be greatly appreciated.
    5,000 gal Fiberglass paper cartridge filter, autochlorinator, BBB
    20,000 gal Pebble Tec paper cartridge filter, BBB
    15,000 gal Pebble Tec, DE filter, autochlorinator, BBB
    20,000 gal Pebble Tec, sand filter, BBB

  4. Back To Top    #4

    Join Date
    Sep 2013
    Location
    Auburn, Alabama
    Posts
    73

    Re: Salt water pool suction

    All suction lines except the skimmer you are vacuuming from should be closed.

    If there are 2 skimmers on one line, stick a tennis ball in the one you are not using to vacuum.
    The Original Leak Specialists.

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    Join Date
    Jun 2012
    Location
    St Pete FL
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    Re: Salt water pool suction

    Thanks!! There are two skimmers and I could not figure our how to close the 2nd one. Smart idea. The other pool I am Taking care of has flaps you can swivel over to close it. That one I finally got to suction correctly.
    5,000 gal Fiberglass paper cartridge filter, autochlorinator, BBB
    20,000 gal Pebble Tec paper cartridge filter, BBB
    15,000 gal Pebble Tec, DE filter, autochlorinator, BBB
    20,000 gal Pebble Tec, sand filter, BBB

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    Re: Salt water pool suction

    If the skimmers have equalizer lines, then you will need to plug those to vacuum through the skimmer.

  7. Back To Top    #7

    Join Date
    Jun 2012
    Location
    St Pete FL
    Posts
    45

    Re: Salt water pool suction

    @ JamesW Not sure what an equalizer line is.
    5,000 gal Fiberglass paper cartridge filter, autochlorinator, BBB
    20,000 gal Pebble Tec paper cartridge filter, BBB
    15,000 gal Pebble Tec, DE filter, autochlorinator, BBB
    20,000 gal Pebble Tec, sand filter, BBB

  8. Back To Top    #8

    Join Date
    Jun 2012
    Location
    St Pete FL
    Posts
    45

    Re: Salt water pool suction

    @ JamesW nevermind now I know what equalizer lines are DUH!!!
    THANKS
    5,000 gal Fiberglass paper cartridge filter, autochlorinator, BBB
    20,000 gal Pebble Tec paper cartridge filter, BBB
    15,000 gal Pebble Tec, DE filter, autochlorinator, BBB
    20,000 gal Pebble Tec, sand filter, BBB

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