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Thread: CYA is too high!

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    Join Date
    Jun 2015
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    Oak Grove, MS
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    CYA is too high!

    Hey, I am new here! My husband and I have been battling with our pool the past 2 summers. After throwing away tons of money, we have recently decided to go with the BBB method. We have been doing research, and from what we have read it should be the way to go. We have an in ground vinyl pool, he says it holds about 25,000 gallons. We purchased our test kit last week...according to that, our CYA was off the charts. We have been gradually draining and refilling a little at a time. It is FINALLY just now reading right about 100. I am getting frustrated because of how slow this process is. I just now took a look at the pool calculator and found out we will need to replace 60% of our pool.... UGH! As if this isn't costing enough as it is, ha! Any advice...maybe other suggestions? Encouragement??

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    Mod Squad jblizzle's Avatar
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    Re: CYA is too high!

    Welcome to TFP!!!

    Now that you have a good test kit (which did you buy?) you can take control of the pool.
    No option besides replacing water to lower the CYA ... how did you chlorinate in the past? If you used tablets, that is what got you into this mess.

    Have you discovered Pool School yet? Start with these:
    ABCs of Water Chemistry
    Recommended Pool Chemicals
    How to Chlorinate Your Pool
    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
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    Mod Squad zea3's Avatar
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    Re: CYA is too high!

    Hi, welcome to TFP! Your story is very common. CYA test maxes out at 100, so it is not unusual that yours started out much higher than that. Just keep at it and soon you will have a beautiful sparkling pool!
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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    Texas Splash's Avatar
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    Re: CYA is too high!

    Many of us, before learning TFP, learned our CYA was exceptionally high as well. You're in good company. Hang in there. Once you lower it and follow TFP, you won't go that high again.

    Also, when you get a moment, please add your pool info to your signature by going to the top of the TFP web page (just under the Pool School button) and select "SETTINGS". On the next page look to the left for a menu bar that says, “MY SETTINGS” and go to "EDIT SIGNATURE" to enter your pool and equipment info there. It will help us later.

    Finally, the following are short articles from this site that you will see linked in my signature below: Pool School, Recommended Levels (for YOUR pool), PoolMath Calculator, SLAM, and the Chlorine/CYA Chart. They come-in very handy.

    Welcome!
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
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    Mod Squad kimkats's Avatar
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    Re: CYA is too high!

    I am SO glad you found us! We can help you clear your pool AND save money!

    Get your CYA down and we can go from there. Once you get everything balanced you will not believe how easy it is to maintain!

    You are already ahead of the game with your test kit!

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    cowboycasey's Avatar
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    Jul 2013
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    Fletcher, OK
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    Re: CYA is too high!

    welcome, you both can get a beauty of a pool, keep reading and post up some numbers and we will all get you going
    Pool: Intex 16x32 15000 gal, 2 speed 340042, Pentair CC320 Filter, CircuPool SJ45 Salt System, Intermatic PE653RC; Hot Tub: 650 Gal SWG Megachlor
    links: pool school * Recommended-Levels * SLAM * CYA chart * Test kits * How To Post Pictures * Poolmath * OCLT ** Support your website if we helped you :) **

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    Oak Grove, MS
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    Re: CYA is too high!

    We were using tablets...grrr.

    And we ended up getting the Taylor FAS DPD K-2006.

    So how much water is considered "safe" to drain at once? I think we are trying too hard to stay on the safe side and that's why this is taking so long...we are draining to just below the skimmers then filling back up. Now that I know just how much we need to be replacing, I would like to drain more at one time...just scared to drain too much!!

    - - - Updated - - -

    Okay I will do that! Thank you!

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    Mod Squad jblizzle's Avatar
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    Re: CYA is too high!

    You want to leave at least 1 foot of water in the shallow end to lower the risk of the liner floating/shifting if you have high ground water.
    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!

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