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Thread: CYA Readings

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    Angry CYA Readings

    i have a 17k+ gallon ABG. my CYA reading was 10 at best a couple months ago. according to the pool pal calc, i needed to add a little over 4lbs of CYA to come up to around 50... i did that 2 months ago at the beginning of the season. it hasn't budged. still reading 10 at best, i dumped another 4ish lbs in there 2 wks ago... checked again today... still 10 at best... my reagents are new every year and i've never had this problem... i have the 50ppm reagent to test and show what 50 is supposed to be so i can work off of that (that looks and works fine)... but with my pool water is still pretty much clear all the way to the top of the tube... before i dump another 4lbs in, i wanted to see if i could possibly be doing something wrong.
    27' Round Sharkline Venture 17K Gallon AGP
    Pentair SD80 26" Sand Filter
    Pentair Dynamo 1.5HP Dual Speed Pump
    45MPHP10 Stenner Pump
    Aquabot Pool Rover Jr.

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    Mr Bruce's Avatar
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    Re: CYA Readings

    You say you "dumped" it in. How exactly did you add it?
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart

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    Re: CYA Readings

    Quote Originally Posted by Mr Bruce View Post
    You say you "dumped" it in. How exactly did you add it?
    guess i should have clarified that part... not my 1st rodeo on this, so i placed in a skimmer sock and hung it in front of the return...

    - - - Updated - - -

    i'll also add that the 1st 4lbs was from leslies... the 2nd (thinking there might be an issue with the quality of their CYA) was from lowes... the 3rd i ordered from amazon and got it yesterday...
    27' Round Sharkline Venture 17K Gallon AGP
    Pentair SD80 26" Sand Filter
    Pentair Dynamo 1.5HP Dual Speed Pump
    45MPHP10 Stenner Pump
    Aquabot Pool Rover Jr.

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    Mr Bruce's Avatar
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    Re: CYA Readings

    You don't have an auto-fill do you?
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart

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    Re: CYA Readings

    Quote Originally Posted by Mr Bruce View Post
    You don't have an auto-fill do you?
    no sir... we did have a lot of rain in may... which is why i went ahead and added the other 4lbs without question a couple weeks ago... but now still showing no real movement, i am posing this question on the next 4lbs... :/
    27' Round Sharkline Venture 17K Gallon AGP
    Pentair SD80 26" Sand Filter
    Pentair Dynamo 1.5HP Dual Speed Pump
    45MPHP10 Stenner Pump
    Aquabot Pool Rover Jr.

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    Re: CYA Readings

    That's weird. I would be tempted to try the liquid stuff, since it's immediate and then you could see if it goes down week by week or what.

    It's either water replacement or testing error. I'm betting water replacement.
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart

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    Re: CYA Readings

    Quote Originally Posted by Mr Bruce View Post
    That's weird. I would be tempted to try the liquid stuff, since it's immediate and then you could see if it goes down week by week or what.

    It's either water replacement or testing error. I'm betting water replacement.
    the only water "replacement i've had in the last few weeks is adding back in due to evap... i haven't even had to backflush yet since adding that last 4lbs... and where would i find "liquid" CYA at?
    27' Round Sharkline Venture 17K Gallon AGP
    Pentair SD80 26" Sand Filter
    Pentair Dynamo 1.5HP Dual Speed Pump
    45MPHP10 Stenner Pump
    Aquabot Pool Rover Jr.

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