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Thread: still having poor water pressure into the pool

  1. Back To Top    #1

    Join Date
    Jun 2015
    beverly ma

    still having poor water pressure into the pool

    I'm still in the slamming stage and I have an air tight system. I can clearly see that there's no air in the sight glass of my pump. When I 1st turn on the the filter, I have GREAT pressure coming out of the jets and it slowly dies down after a couple of hours to hardly anything. I look back into the pump and there appears to be no air and plenty of water going in. I back washed and opened and removed the filter and cleaned it. I hosed the inside of the filter (DE filter by the way) and got my pressure back but only for a couple of hours again. Pressure in the gauge has gone up but the plastic valve knob seems a little worn and I'm replacing it tomorrow. I've read a lot about the pumping system in "pool school" but no real mention as to where I should go next with this " losing pressure". Is it just that I need to back wash more often? My pool has been neglected for 2 yrs by the previous home owners. HELLLLLPPPPP!!!!!
    Gunite Diamond II design. east side 20' x west side 9', north side 32' x south 38' (rough measurements). 4' to 10' depth. DE filter made by Jacuzzi

  2. Back To Top    #2
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    DFW, TX

    Re: still having poor water pressure into the pool

    Sounds to me like your filter is doing a great job of filtering all the stuff out of your pool, mostly algae that you are killing. Backwash and add DE when your pressure rises 20-25% from clean pressure and keep SLaMing, it will get better.

    - - - Updated - - -

    Just in case you haven't done it already. Get a leaf rake and scoop all the debris out of the pool. That will help your slam go faster and use less chlorine.
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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

  3. Back To Top    #3
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: still having poor water pressure into the pool

    That's expected behavior while you're SLAMming. DE filters work almost too well. Resist the temptation to not reload the DE. You'll just ruin your grids.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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