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Thread: New Pool owner CYA question

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    New Pool owner CYA question

    Hey guys, I just moved into my first house and have started taking care of the existing pool (AGP, oval, ~10000 gals). I've been following all of your advise on this forum, VERY helpful, but had a quick question:

    After testing the CYA with my TF100, it looked to be roughly 0 (very clear even when the cylindar was full). I added enough CYA in a sock suspended in front of a return to bring it up 20. From other posts in the forum, it seems like it takes ppl a long time to dissolve the CYA, but mine was completely dissolved in about 3 hours (I squeezed the sock a couple times).

    Just wondering, is that is odd?



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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: New Pool owner CYA question

    That is a fair bit better than average, but not really unusual. It can still take up to a week to show up on the test.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: New Pool owner CYA question

    Depends on how holy your sock was

    Assume it is at 20ppm and retest in a week to confirm ... likely you will want to raise it higher to 30-50ppm to better protect the FC from the sun.
    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
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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: New Pool owner CYA question

    It's not odd. Some brands seem to dissolve rather quickly and some don't. The squeezing really speeds it up too.

    reports have it that the HTH brand at walmart it very fast dissolving.
    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

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    Re: New Pool owner CYA question

    Awesome thanks guys, just wanted to double check.

    Yep, i am ultimately shooting for 50 but wanted to low ball it at first in case i was messing something up

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    mikemass's Avatar
    Join Date
    Jul 2013
    Northern Howell, NJ

    Re: New Pool owner CYA question

    To chime in. Last week I filled 2 socks with Cyanuric acid (solid). And put one in each skimmer. 24 hours later when I checked the socks they were rock solid. So I jumped in the pool with both socks in hand and squeezed, kneaded, basically did what ever it took to completely pulverize the particles in the socks. I completely had the socks empty within 5 minutes. When I tested 24 hours after that CYA was raised to where I expected it to be. Great method.
    25 + year pool owner. Current pool (going on 11th year) - 38K gallon in ground Gunite/White Plaster, Spillover Spa, Hayward Cartridge Filter, Hayward 450k BTU NG Heater, Hayward Goldline Aqua Logic control with T-Cell-15 Salt Water Cell, Dolphin Explorer.
    You Need: Bleach, a A Test Kit & a Bookmark to "Pool School". Now what's your question?

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