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Thread: Isolate wall suctions for increased skimmer action?

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    Join Date
    Aug 2010
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    MA
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    Isolate wall suctions for increased skimmer action?

    I currently have the wall suctions throttled down to about 50% which helps, but it seems like I don't get the ideal skimmer action until they are fully closed. Would it be bad practice to operate in this mode the majority of the time? Wouldn't think both skimmer baskets would get clogged and starve my pump, but I guess it would still be a risk. I have no bottom drains, so I'm somewhat concerned about poor circulation in the deep end. One of my returns in the deep end could be angled downwards, but then my surface water circulation would be compromised and I'm pretty much back where I started. This scenario is with the pump on low speed. Advice/suggestions
    Completed: June 2011
    18' X 38' IG Vinyl, 3' - 8' depth ~ 24K gallons
    2 skimmers, 2 wall suctions, 3 returns, 1.5" piping

    Hayward Equipment: 1HP Tri-star 2-speed, Aqua-Plus SWG,
    Star-Clear Plus 175 sqft cartridge filter, Colorlogic 4.0 LED

    The Pool Cleaner 4X(suction)
    2011 Jacuzzi J-280 Hot tub

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    JasonLion's Avatar
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    May 2007
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    Re: Isolate wall suctions for increased skimmer action?

    The big advantage of having wall suction is to have some water flow even if your skimmer(s) get blocked with leaves. If you turn the wall suction off completely, the pump will lose prime when the skimmer(s) get blocked.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Isolate wall suctions for increased skimmer action?

    I run mine 50-50 usually. If i have a lot of floating stuff, i'll run it 80-20 skimmer.
    You have 2 wall suctions i take it? If thats the case, you might need to run 80-20 more often. But, I wouldn't shut down the wall suction completely. You'll just have to experiemnt with it until you find what works the best. Dont overthink it too much.
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

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    Re: Isolate wall suctions for increased skimmer action?

    Quote Originally Posted by bk406
    I run mine 50-50 usually. If i have a lot of floating stuff, i'll run it 80-20 skimmer.
    You have 2 wall suctions i take it? If thats the case, you might need to run 80-20 more often.
    Yes, 2 wall suctions.

    Just to be clear - when you say 50-50, are you implying that both skimmer and wall suction valves are open wide and in the case of 80-20 you're throttling down on the wall suctions with the skimmers fully open?

    Quote Originally Posted by bk406
    You'll just have to experiemnt with it until you find what works the best. Dont overthink it too much.
    Funny, I was kicking around the idea of installing an actuator on the wall suction valve to automate the process.
    Completed: June 2011
    18' X 38' IG Vinyl, 3' - 8' depth ~ 24K gallons
    2 skimmers, 2 wall suctions, 3 returns, 1.5" piping

    Hayward Equipment: 1HP Tri-star 2-speed, Aqua-Plus SWG,
    Star-Clear Plus 175 sqft cartridge filter, Colorlogic 4.0 LED

    The Pool Cleaner 4X(suction)
    2011 Jacuzzi J-280 Hot tub

  5. Back To Top    #5

    Join Date
    Dec 2009
    Location
    Central Massachusetts
    Posts
    2,690

    Re: Isolate wall suctions for increased skimmer action?

    I'm not sure how yours is plumbed. I have 2 suction lines into a 3 way. I put the 3 way handle in the middle (i.e. 50-50). If i want more skimmer, I turn the valve more toward the skimmer.

    An actuator? Naw, thats overkill. Keep it simple.
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

  6. Back To Top    #6

    Join Date
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    MA
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    Re: Isolate wall suctions for increased skimmer action?

    Ok, I gotcha.

    My set-up has (2) 3-way valves, so what I have been doing is leaving the skimmer intakes fully open and closing down on the wall suctions incrementally until I get satisfactory draw into the skimmers. Problem is, I have to completely shut the wall suctions to achieve this.


    I guess I'll just have to leave the wall suction valve slightly cracked open and live with it. Or run the pump on high speed.
    Completed: June 2011
    18' X 38' IG Vinyl, 3' - 8' depth ~ 24K gallons
    2 skimmers, 2 wall suctions, 3 returns, 1.5" piping

    Hayward Equipment: 1HP Tri-star 2-speed, Aqua-Plus SWG,
    Star-Clear Plus 175 sqft cartridge filter, Colorlogic 4.0 LED

    The Pool Cleaner 4X(suction)
    2011 Jacuzzi J-280 Hot tub

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