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Thread: CYA and backwashing

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    CYA and backwashing

    Stupid question.. I am using the sock method.. 1.75lbs of CYA at a time.. do you wait a week to backwash AFTER all of the CYA has dissolved, or do you just not backwash the week it is dissolving, or both?

    I had zero CYA in my pool and have added 3.5lbs over the last two week and I am still only barely reading 5-10.

    Thanks!
    2003 Coleman MAAX Collection Model 706 - 400gal

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    Join Date
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    Re: CYA and backwashing

    I would wait to backwash at least 3 or 4 days after adding CYA. A week to be totally sure. How often are you backwashing? Are you clearing a green pool and having to do it frequently because of this?

    3.5 lbs of CYA would really only get you to about 17 ppm. Should be higher than 5 to 10 unless you lost some.

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    Butterfly's Avatar
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    Re: CYA and backwashing

    Are you using the sock method in the skimmer or in front of the return?

    If in the the skimmer, I'd wait as 257 said.

    If in front of the return, you should be able to backwash when needed with little CYA loss.
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    Re: CYA and backwashing

    I am using the sock method in the skimmer.. I was only backwashing because my filter gets dirty after brushing and running the polaris.
    2003 Coleman MAAX Collection Model 706 - 400gal

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    frustratedpoolmom's Avatar
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    May 2007
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    Re: CYA and backwashing

    Trying tieing it off in front of the return - go ahead and add another couple of pounds.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Re: CYA and backwashing

    will do thanks!
    2003 Coleman MAAX Collection Model 706 - 400gal

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