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Thread: Adding CYA and Cartridge Filter Changing

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    Join Date
    May 2011
    Location
    Coral Springs, FL (near Ft. Lauderdale)
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    92

    Adding CYA and Cartridge Filter Changing

    I am in the process of adding CYA to my pool using the sock method. I also have to change the cartridge in my filter. I read that for sand filters, they shouldn't be backwashed for a week after adding CYA. Is there a similar rule for not changing a cartridge for a certain period after adding CYA or does this not apply? Don't want to lose the CYA I just added by switching filters.

    Thanks!
    15x30 inground concrete pool w/spa and spillover, all under screen enclosure
    Hayward C1200 StarClear Plus Cartridge Filter and Hayward Navigator V-Flex
    Jandy AquaPure 1400, Laars LX400 propane heater w/120 gal above-ground tank
    Jandy VS FloPro 2.7 HP Pump VSFHP270JEP; FlowVis FV-C Flow Meter
    Jandy iAquaLink and OneTouch controller w/PDA remotes; JVA for draining pool

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
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    30,078

    Re: Adding CYA and Cartridge Filter Changing

    The caution for sand filters is when you DO NOT use the sock method. Since you have chosen the sock method, you do not have to worry about losing CYA at all.

    If you had a sand filter and did not use the sock method, the CYA would be drawn into the filter as a solid and, potentially backwashed out of the system if you did not wait for it to be fully dissolved within the filter.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Join Date
    May 2011
    Location
    Coral Springs, FL (near Ft. Lauderdale)
    Posts
    92

    Re: Adding CYA and Cartridge Filter Changing

    Great. Thanks for the quick response.
    15x30 inground concrete pool w/spa and spillover, all under screen enclosure
    Hayward C1200 StarClear Plus Cartridge Filter and Hayward Navigator V-Flex
    Jandy AquaPure 1400, Laars LX400 propane heater w/120 gal above-ground tank
    Jandy VS FloPro 2.7 HP Pump VSFHP270JEP; FlowVis FV-C Flow Meter
    Jandy iAquaLink and OneTouch controller w/PDA remotes; JVA for draining pool

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