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Hi all, I posted a couple of weeks ago asking for help selecting a cartridge filter. I have a 22,000 gal IG pool and the concensus was 425 sq foot filter. I informed the builder of my choice and he assured me that it would be at least 425 sq ft. Well, now that everything was installed, I...

I am a new pool owner in an area with very hard water. Attached is the chemistry - the only thing I added at this point was bleach and CYA. As you can see the fill water is very hard. FC - 5ppm pH - 7.2 TA - 230 CH - 290 CYA - ~40 - just added yesterday and it is still dissolving - target 75...

Hi all. I have been lurking here for a while and really appreciate all the great information. I was hoping I could get some advice on filter sizing for my new IG pool. It is a 20x41 "mountain pond" at about 25,000 gallons. Since I will be using a SWG I decided to go with a cartridge filter...