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Thread: Where does the CYA go over winter? Florida??

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    Join Date
    Jul 2012
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    Way north of Chicago
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    Where does the CYA go over winter? Florida??

    Last summer I had 50 or so PPM of CYA. Drained about 1/4 of the water out for winter. Now I have 0. Same thing happened last two springs. Where does it go? Do the cold and freezing degrade it somehow?
    25000 gal inground curved L shape - concrete, fiberglass walls - with Jacuzzi Sherlock 160 cartridge filter, Laars Lite LLG gas heater & Klean-a-tron robot
    near the pool: Cookshack Smokette, Akorn Kamado grill, putting green
    in the shed: Deere greens mower, Simplicity FC-16 front cut mower

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    Azgirl71's Avatar
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    Re: Where does the CYA go over winter? Florida??

    How does your water look?
    Lisa
    Intex AG vinyl 15' x 48" 4,300 gallons due to skimmer install, Krystal Clear SF pump combo 2800 GPH, Krystal Clear SWG, Pool Blaster Max vacuum, Hayward thru the wall skimmer, TF 100 test kit with speed stir, K 1766 Taylor salt test, My SLAM Process

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    Mod Squad woodyp's Avatar
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    Re: Where does the CYA go over winter? Florida??

    Some form of bacteria eats it in certain cases-------we think.

    What is your current CC level?
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

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    Join Date
    Jul 2012
    Location
    Way north of Chicago
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    Re: Where does the CYA go over winter? Florida??

    CC = 0 or .5, FC around 28, water is still a bit turquoise/grey 3 or 4 days after opening but is making good progress. It was the usual brownish green worm cocktail when we pulled the cover off. No dead mammals, reptiles or amphibians this year - just one live toad. CYA-eating bacteria that live in cold water but are killed/fought back by sanitizing or heat? Would be an explanation. Also, I'll admit I didn't check it for the last month or so of last summer, so it could have got low then. But the chlorine levels didn't necessarily act like there was no stabilizer.

    Not a huge problem, I'll add the required amount of stabilizer this weekend.

    A slightly different topic I don't remember seeing here: Does water temperature affect chlorine's working? On the pool calculator, temperature seems only to affect CSI. The water is still under 60F. Not worth turning on the heater yet as, except for one or two days, the air temperature has been far too cold for swimsuits.
    25000 gal inground curved L shape - concrete, fiberglass walls - with Jacuzzi Sherlock 160 cartridge filter, Laars Lite LLG gas heater & Klean-a-tron robot
    near the pool: Cookshack Smokette, Akorn Kamado grill, putting green
    in the shed: Deere greens mower, Simplicity FC-16 front cut mower

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