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

Thread: CYA Shelf Life

  1. Back To Top    #1
    Smykowski's Avatar
    Join Date
    Sep 2011
    Location
    Gurnee, IL (North Suburban Chi-town)
    Posts
    3,065

    CYA Shelf Life

    The best part of this forum? I can ask what will probably be a stupid question, and I won't get flogged for it!!

    Is there a shelf life for dry CYA?

    I haven't opened my pool yet, and even if I have 0 and need to bring it up to 70ppm, it would take 15lbs. I can get a 40lb bucket online for about $57 out the door. Less that $2.50/lb is by far the cheapest I have seen so far. Since the likelihood of going through 40lb in one season is almost zero, and I'm more likely to spread it out over three seasons, is there any reason I can't buy the super-giant bucket at the cheapest unit price, and leave what I don't use on the shelf for the next 3 years?

    Thanks.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,333

    Re: CYA Shelf Life

    As long as you keep it sealed up it'll keep for several years. And it's not a stupid question at all!!
    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

  3. Back To Top    #3
    Smykowski's Avatar
    Join Date
    Sep 2011
    Location
    Gurnee, IL (North Suburban Chi-town)
    Posts
    3,065

    Re: CYA Shelf Life

    Sorta related question....

    Menard's has a ridiculous sale on 12.5% liquid right now. Is it feasable to stock up for the summer? Or a better way to ask, how fast does it break down in the bottle?
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

  4. Back To Top    #4
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: CYA Shelf Life

    Quote Originally Posted by Smykowski
    Sorta related question....

    Menard's has a ridiculous sale on 12.5% liquid right now. Is it feasable to stock up for the summer? Or a better way to ask, how fast does it break down in the bottle?
    Now, that's another story Short answer is NO.

    The higher the %, the faster it degrades. Sorry, but thanks for asking!

    You're not the only one who wants to know! Also remember to look for Expiration dates on your chlorine products
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  5. Back To Top    #5
    Isaac-1's Avatar
    Join Date
    May 2010
    Location
    SW Louisiana
    Posts
    6,711

    Re: CYA Shelf Life

    One factor that effects shelf life of bleach or liquid chlorine is the storage temperature, also you have to wonder if this reduced price liquid chlorine is left over from last year if so it is also reduced strength. I just dealt with some that had a 2008 pack date, and to say the least the effect on the pool was less than impressive. However if the sale stuff is fresh (look for pack / experation dates) and you happen to have a good cool climate controlled place to store it then it may be worth stocking up on enough to last you a few months.
    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~

Posting Permissions

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