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Thread: What do I adjust first? TA or CYA?

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    nate81's Avatar
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    What do I adjust first? TA or CYA?

    I did the sock method for CYA yesterday...and apparently I didn't use enough, i'm only register about 40 for CYA

    FC 1
    PH 7
    TA 110
    CYA 40

    I have a SWG but have not purchased the salt yet....so i'm running on bleacch until i can get my hands on salt. I think i made my TA too high! My CYA needs to be higher...and my FC is definitely too low....i'm going to get the right amount of bleach in right now in fact, its 8pm where I am.
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    Mod Squad jblizzle's Avatar
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    Re: What do I adjust first? TA or CYA?

    Worry about TA when you are bored with everything else being perfect.

    You can not test the CYA until a week after it has dissolved, so I would not add any more.
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    Richard320's Avatar
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    Re: What do I adjust first? TA or CYA?

    The CYA won't show up on the test 100% for a few days after dissolving. Your pH is a bit low, so just aerate to get the pH up between 7.2 and 7.8. A bunch of kids splashing counts. Worry about TA later. It will come down each time you add acid anyway.

    The low FC is more alarming than anything else.
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    nate81's Avatar
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    Re: What do I adjust first? TA or CYA?

    So my TA Is ok where it is? its not too high for now?

    - - - Updated - - -

    Quote Originally Posted by Richard320 View Post
    The CYA won't show up on the test 100% for a few days after dissolving. Your pH is a bit low, so just aerate to get the pH up between 7.2 and 7.8. A bunch of kids splashing counts. Worry about TA later. It will come down each time you add acid anyway.

    The low FC is more alarming than anything else.
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    Re: What do I adjust first? TA or CYA?

    CYA may not register on the test for a week. Assume that CYA is at the level you targeted and dose bleach based on that. After a week, retest CYA and adjust. It is always better to add less than your ultimate goal since the only way to reduce CYA is by draining and replacing water.

    TA is high; especially for SWG where pH will rise due to aeration in the cell. What did you add that you think raised your TA? Did you add baking soda? CYA does not raise TA. You can either bring TA down now, or resign yourself to frequent additions of muriatic acid for pH, which will slowly bring TA into check.
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    Re: What do I adjust first? TA or CYA?

    I managed to find liquid CYA the other day, I'm so excited... I can't have stuff floating in the pool as my youngest son is autistic and his compulsion is to throw everything out of the pool, so the liquid, while expensive, is a bonus for me...
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    Re: What do I adjust first? TA or CYA?

    Shocking. Richard320 and jblizzle beat me to the punch.
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    Re: What do I adjust first? TA or CYA?

    the water is fresh from my well....so i added *i think* it was about 5 cups of baking soda, as per the pool calc's directions. I also added borax to bring pH up
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    Re: What do I adjust first? TA or CYA?

    Add your salt now, you can't do anything about TA until Ph comes up. Point your outlet up toward the surface to help aerate the water to raise Ph. Dose with bleach daily to keep your FC in line with your current CYA level. After your salt has dissolved and you are ready to start the SWG, raise the CYA to SWG level and start dialing in the swg to maintain the proper levels. Dose with bleach as needed until you get your swg run times dialed in to maintain FC between the recommended levels. Once your SWG is running fine, then focus on TA, running the swg will increase Ph, so you will need to bring it down with acid periodically which will reduce TA in the process.
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