Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 2 of 2

Thread: Confusion on directions for adding DE to filter

  1. Back To Top    #1

    Join Date
    Jun 2016
    Belvidere, IL

    Confusion on directions for adding DE to filter

    Hi everyone! We r planning on adding DE to our sand filter today. But we are confused regarding the PSI. Wouldn't adding the DE, and catching more debris, cause the PSI to go lower, not go up?
    `23,000 gallons
    Vinyl, AG pool with Hayward Voyager 2 speed pump (which I can't find ANY information) and sand filter
    Date installed 6/7/2013
    We use city water, no restrictions and test strips.

  2. Back To Top    #2
    Mod Squad Jimrahbe's Avatar
    Join Date
    Jul 2014
    Bedford, TX

    Re: Confusion on directions for adding DE to filter

    As the filter gets dirty, it is harder for the pump to push water through it, therefor the pressure gage on the filter will go up and the flow from the returns goes down. Instead of thinking of the gage as a "Pressure" gage, think of it as a "Resistance to flow" gage.

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Calder Spa.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts