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I have a small pool I purchased this year (~450 gallons) so I went the liquid CYA route. It seems like the one everyone references is the one I found on most sites, the Natural Chemistry Instant Conditioner. I tried to use Pool Math (version on PC through Windows Store) to figure out how much to...

I’ve been having a problem ever since we got our pool. Every day when I check our pool, there are areas where a brown fine substance has collected around the wrinkles in our pool liner. The majority of it ends up near the middle of the pool since our pool is round and the pump pushes the water...

I tried searching for this answer but couldn't find anything. When doing the FAS-DPD test with the TF-100, I've seen the official (and extended) instructions say to add the reagent R-0871 until the sample turns clear. I've seen for the other tests that it's recommended to add until there is no...

In Pool School, Pool Chemistry, How to Chlorinate Your Pool, number 5 has: 5. Lithium Hypo - A convenient powdered for for chlorine. I think "for for" was meant to be "form of"

This was our second season with our above ground pool. Last winter, we decided not to cover the pool and just leave it open since we're in southern Louisiana and our winters here are not bad. We may get a rare night below freezing but temps always rebound during the day. Well it was an...