Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: General question

  1. Back To Top    #1

    General question

    Just wondering why swg's recquire/work better with higher levels of cya?
    24X52 AG..Hayward DE 1HP pump..Intellichlor IC15

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: General question

    There are two separate effects. First, higher CYA levels mean less total chlorine used, so you can use a smaller SWG and it will last longer than it would at a lower CYA level. Second, SWGs somehow reduce several of the bad side effects of higher CYA levels that are normally experienced with other forms of chlorine. So the higher levels don't have any more problems than a lower CYA level without a SWG. No one really seems to know why that is, but it is probably due to the extremely high FC levels inside the SWG cell.
    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

    Re: General question

    Thanks for the reply..I just put in a swg (intellichlor) for my AG and my pool gets 100% direct sun every day..not an ounce of shade. I've always kept my cya levels around 30-40 but that was when I was using the tabs with added stabilizer. I've raised it to about 40 so far and everything has been good but it really hasn't been that hot yet here in NJ to really test it.
    24X52 AG..Hayward DE 1HP pump..Intellichlor IC15

  4. Back To Top    #4
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: General question

    The SWG will work at lower CYA levels, it just might not keep up at the peak of the summer with lots of people swimming, and the cell won't last as long.
    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

  5. Back To Top    #5

    Re: General question

    Gotcha..I will keep raising the level..no sense in shortening the cell life for no reason.
    24X52 AG..Hayward DE 1HP pump..Intellichlor IC15

Posting Permissions

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