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

Thread: Screwed up CYA What Other Harm Have I Done?

  1. Back To Top    #1

    Screwed up CYA What Other Harm Have I Done?

    I have been in the process of converting spa to BBB the last 2 weeks and have had a couple of slips but I think I'm close.
    Numbers taken today
    FC 4
    CC 0
    PH 7.7
    TA 60
    CYA 100
    Borates 50

    First the obvious, my cya is to high. This happened when I was adding dichlor using old test strips. My T-2600 had run out of reagent. So I way over shot FC and CYA. This fix seems to be drain water and refill but how much? My spa is 510 gallons.

    TA is low but when I raise it PH goes up so I add MA and TA and PH go down. I aerate to raise PH but then TA stays low?

    Thanks for the help Jim
    17500 gallon Sharkline Morada PUR RTR 18X40 54 tall, 1.5 Hayward cartridge filter,

  2. Back To Top    #2
    MikeInNH's Avatar
    Join Date
    Sep 2007
    Location
    Southern NH
    Posts
    476

    Re: Screwed up CYA What Other Harm Have I Done?

    Folks typically shoot for 50CYA so half is probably good. At least it's not your 17.5k pool.
    Mike
    2007 1st full year with AG pool~15k gallons 18'x33' JW
    6/2010 added 2 button Intex SWG-painless except for when reset
    Switched to BBB from Baquacil (couldn't pay me to go back)

  3. Back To Top    #3
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Screwed up CYA What Other Harm Have I Done?

    what chemicals are you using for your pH and TA adjustments?

    Posted from my Droid with Tapatalk ... sorry if my response is short
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  4. Back To Top    #4

    Re: Screwed up CYA What Other Harm Have I Done?

    To lower PH I'm using MA. To raise TA I had a product called akalinity up.

    My 17500 has been flawless all year thanks to TFP. I will be signing up for a lifetime membership tonight.

    Thanks Guys/Gals
    17500 gallon Sharkline Morada PUR RTR 18X40 54 tall, 1.5 Hayward cartridge filter,

  5. Back To Top    #5
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Screwed up CYA What Other Harm Have I Done?

    usually TA up is just baking soda ... which has a very small affect on the pH. Surprised that you saw the pH rise.

    Borax will raise the pH with minimal TA effects.

    You can see what should be happening at the bottom of poolcalculator.

    Posted from my Droid with Tapatalk ... sorry if my response is short
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

Posting Permissions

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