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According to the pool calculator, my CSI is -0.17 so that looks ok, right? My plaster pool is about 15 years old. I manually pour in the liquid chlorine. I very rarely have to add acid, the PH is very stable. From all your good advice, it appears my current targets are just fine. Thanks again!

Thanks so much for the great, and fast, information! I'm using liquid chlorine so no additional CYA there. My water looks good. I was curious about which way is more economical as far as buying more or less chlorine, having a low CYA which is less "stabilized" but not having to keep such a...

Here are my current readings: FC: 7 CC: 0 PH: 7.6 TA: 100 CH: 250 CYA: 60 Borates - Currently not using. I'm going to be draining and replacing water very soon to get my CYA down and start fresh. I've read through the pool school and am aware of the general targets. I'd like to know if they...

Great info guys, thanks so much! This site is awesome.

Thanks for the quick response! I tested the water that comes out of my hose, got a CH reading of 40ppm. My pool gets full sun for most of the day so I usually have to add about an inch every few three or four days due to evaporation. Here's my current readings: FC 2 I know with my CYA I...

As a long time frustrated pool owner I've stumbled onto your site and I've learned more in the last few weeks than I have in years prior, so thanks for the great info! One question I had is regarding calcium hardness. My initial test reading was 100 but I see that between 250-350 is recommended...