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Thread: Low suction in shallow end skimmer

  1. Back To Top    #1

    Join Date
    May 2015
    Goodview, VA

    Low suction in shallow end skimmer

    New pool this year. Deep end skimmer has good suction however shallow end is almost non-existent. What could be causing this?
    2015 Hayward vinyl pool, 20'x40', 33000 gal?, 3'-8', Aqua Right Goldline control board, T-Cell 15 salt chlorinator, Hayward Max Flo XL 1.5hp pump, 2 main drains and 2 skimmers, LaMotte 7022 FAS-DPD Commercial 7 test kit.

  2. Back To Top    #2

    Join Date
    Oct 2013

    Re: Low suction in shallow end skimmer

    Are your skimmers on the same line (same valve/pipe going into the pump?) That is the setup I have where there is a line that goes from the shallow end skimmer with a tee for the deep end skimmer then to the pump. With everything equal almost all the water comes from the closer skimmer (deep end). However in bottom of that skimmer under the basket there is a small plastic circle i can move so it blocks more or less of the opening at the bottom to adjust how much comes from each skimmer by closing off some of the flow from the deep end skimmer. Every spring it takes a bit of tweaking to get it right since it gets moved out of the way during winterizing.
    20,000gal in-ground 16x36 sentry pools vinyl liner, Pentair sand filter, Pentair minimax NT heater, auto-cover, Polaris 280 cleaner.

  3. Back To Top    #3
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Columbia, SC

    Re: Low suction in shallow end skimmer

    Have you looked at the slide valve in the bottom of the skimmer? Most have a little cover that slides back and forth to change the suction level.

    Second would be, do you know how the piping is run? Are all skimmers/drains home run back to the equipment pad or are they daisy chained on the same pipe? If they are all on one pipe, this is where those little valves on the bottom of the skimmer come into play so you can adjust the flow.

    A third possibility is that something fell down that pipe when the skimmer basket was out. One of my skimmer pipes had a large rock (egg sized river rock) down the pipe. I could see it down at the bottom, apparently (lucky for me) it was too large to make the turn in the pipe so with a bent coat hanger I was able to get it out.
    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

  4. Back To Top    #4
    Mod Squad
    Join Date
    Aug 2012
    DFW, TX

    Re: Low suction in shallow end skimmer

    Every now and then a leaf or debris will get in my farside skimmer and slow the flow. I turn my pump up, turn the valve to all skimmers and put my hand over the nearside skimmer hole to force all the suction through the farside skimmer. Been good for me so far. Luckily I haven't had any rocks in mine!
    TFP Moderator
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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