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    Why did my CYA disappear?

    Left for vacation, leaving the 25 y/o in charge. We were at a CYA of 40, holding FCs of 2-3, water looking good. The Son started complaining that FCs were hitting 0 everyday, and when we got back, CYA was undetectable. There had been *some* heavy rains in the interim, but he hadn't drained...
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    Polaris (3900 Sport) pump leaking--is it the shaft seal? The volute?

    Getting a persistent drip from the booster pump between the impeller/volute assembly and the motor, even when the cleaner & hose are not attached to the jet. Looks like something I might be able to attempt myself...
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    PF-50 Sand filters--anyone else still using?

    It seems hard to find info on these old guys--found this old thread, with a link to a manual (God bless you, Jay @griffiths) https://www.troublefreepool.com/threads/72433-New-to-me-PF-50-Sand-Filter. So I acquired a pool, and this puppy, in a real estate transaction last fall. Slowly trying to...
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    First year with pool--clearing the swamp?

    Acquired a pool (~18-20,000 gal--I can't see geometry of bottom yet--vinyl liner, sand filter) in a house purchase for my son. Was inadequately covered over winter, so--a mess. Had a service come out and open us up 8 days ago. They added 20 gal chlorine, told me to add 10 more 5 days ago...