Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: Changing Sand in filter, have questions.

  1. Back To Top    #1

    Changing Sand in filter, have questions.

    Hey TFP, looking to soon replace 300lbs of sand in pool filter. Called around and prices are $12 per 50# bags. That seems a lot to me, since you can buy play sand from Lowes for $3. Which leads to this question, Could I use this type of sand. Also I see where some add pea gravel first, what is that about?

    Lastly, what should I check and lookout for when replacing the sand. It is a Hayward side mounted multiport.

    Thanks a lot,

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Changing Sand in filter, have questions.

    Chances are that you do not in fact need to change the sand. It is very unusual that anyone ever needs to change their sand.

    If you are changing the sand you must use #20 silica sand/pool filter sand, play sand will not work at all. Large filters use pea gravel to save a little money and to improve water flow inside the filter. With a 300# filter you really won't get much advantage from using pea gravel, though it won't hurt either.

    Take care with the laterals when changing sand. They can be easily cracked.
    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

  3. Back To Top    #3
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Changing Sand in filter, have questions.

    As Jason said, you most likely don't need to change the sand. Why do you think it needs changing?
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

Posting Permissions

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