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Thread: Numbers after partial drain and refill

  1. Back To Top    #1

    Join Date
    Mar 2009
    Location
    Glendora, California
    Posts
    169

    Numbers after partial drain and refill

    Below are my previous numbers and required a partial drain and fill.
    Before drain and fill
    FC 5
    CC 0.5
    PH 7.2
    TA 100
    CH 550
    CYA 100+ Still don't reach first line on test

    I guesstimate I changed about 75%, which I still feel guilty about being in drought town CA. So now I present my new numbers for your review.......
    After drain and fill
    FC 2.5 (floaters are out of the pool and I added 6% bleach! But I need to double for my CYA)
    CC 0
    PH 7.5
    TA 130
    CH 300
    CYA 70 (looks like I had a ton of this stuff)
    18k Inground Plaster pool / TriStar Variable Speed Pump and Controller
    48sq ft Hayward DE filter/ Swim pure Plus 40k cell / Kreepy Krauly
    Solaxx Ph-Tek

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: Numbers after partial drain and refill

    Great, your numbers are looking much better!

    A CYA of 70 is acceptable, even though we recommend getting it down to 50 if you can. The only thing you need to do is raise your FC level, as you already know.
    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
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: Numbers after partial drain and refill

    Do you backwash your filter? You'll see that 70 slowly drop over the year....I ran with 70 one season and it slowly came down from water replacement.

    Make sure you keep that FC up at the proper level!

    Great job
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  4. Back To Top    #4

    Join Date
    Mar 2009
    Location
    Glendora, California
    Posts
    169

    Re: Numbers after partial drain and refill

    I could not have done it without everyone's advice and all the great info on this site. Now I will be going SWG in a couple weeks, I believe my CYA of 70 should be good for salt?
    18k Inground Plaster pool / TriStar Variable Speed Pump and Controller
    48sq ft Hayward DE filter/ Swim pure Plus 40k cell / Kreepy Krauly
    Solaxx Ph-Tek

  5. Back To Top    #5
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: Numbers after partial drain and refill

    Here's an article on water balance for SWGs if you haven't already seen it:
    http://www.troublefreepool.com/pool-...ater_generator
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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