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Thread: Chlorine + UV Filter?

  1. Back To Top    #1

    Join Date
    Feb 2014
    Leander, TX

    Chlorine + UV Filter?

    Howdy all. I'm new here, still, and am STILL not comfortable with my setup. I have a chlorine pool (23k gal) with an additional UV filter. I'm just starting to get in to the pool school stuff and want to know what effects the UV filter has on the greater chemistry in terms of rates/ratios/etc regarding chlorine.

    Any suggestions/tips are appreciated...if the UV thingy even matters in the chemical figures.

    23k gal IG pebble, 48 sq ft Pentair FNS Plus DE filter (FNSP 48) 96 GPM, 1.5 HP WhisperFlo pump, Kreepy Krauly Legend Robot.
    Pool was built in 2011, in Central Texas (Leander, TX)

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

    Re: Chlorine + UV Filter?

    UV does hardly anything in an outdoor residential pool, none of the target levels are affected at all. The main point of a UV system is to break down CC more quickly than chlorine alone can do so. But in a residential pool chlorine normally breaks down any CC more than quickly enough. The only time there is really anything for the UV light to do is when you have a large pool party, which will cause CC to build up more quickly. Then a UV light can clean things up quickly, while chlorine alone often takes an extra day to recover.
    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

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