Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: High CYA

  1. Back To Top    #1

    Join Date
    Aug 2011
    Location
    Southern California
    Posts
    188

    High CYA

    I have what I believe to be extremely high CYA. I tested using a Taylor (#2006) FAS-DPD kit. Reading was off the scale. I then mix one part pool water to to one part tap and retested. Still off the scale. I then decided to mix one part pool water to FOUR parts tap water and retested. I now get a reading of approximately 42. My question(s) are, should I multiply the 42 by 4 to get a total of 168 or am I multiplying 42 by 5 for a reading of 210? I know in either case that I will be dumping pool water this afternoon and refilling to get this under control. My thought is start with half the pool water. Does that sound too extreme? I really don't want to pull too much out only to have to replenish.
    Thanks.

  2. Back To Top    #2
    Isaac-1's Avatar
    Join Date
    May 2010
    Location
    SW Louisiana
    Posts
    6,711

    Re: High CYA

    If you have a high water table you need to be careful draining more than a foot or so of water from your pool at a time, or else you take the chance of the pool floating out of the ground.

    Ike
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
    ~Remember TFP counts on your donations to keep this site ad free~

  3. Back To Top    #3

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,083

    Re: High CYA

    I'm with Isaac-1. If you live on a desert mountaintop, 50% is fine....living at the low end of a swamp requires more caution.

    Truth be told, 50% is likely fine but the consequences of misjudging are severe. I would suggest 1/3 at a time.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  4. Back To Top    #4

    Join Date
    Aug 2011
    Location
    Southern California
    Posts
    188

    Re: High CYA

    No high water table here. I'm actually on a view lot above other houses, but can do 1/3 at a time to be safe. I recall the last time it was acid washed they drained it.

Posting Permissions

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