Hello! We recently moved into a house with a 6 year old in ground concrete (plaster?) pool that is NOT saltwater. The previous owner had been using stabilized chlorine tabs and Calcium hypochlorite. After reading as many articles as I could at TFP, I have some questions that I've been unable to find answers to. First, here's the testing results I measured today:
pH = 7.5
Free Chlorine = 2 ppm
Total Alkalinity = 110 ppm
Ca hardness = 450 ppm
CYA = 80 ppm
And now the questions. Thanks in advance for steering me in the right direction!
1. Obviously my CYA is too high. I have NO idea how to drain half my pool. From Google searching, looks like I should rent/buy a pump and drain the water to my sewer cleanout? Alternatively, I could pay a company to drain/refill it? Can somebody help!?
2. Everywhere I read, having an FC level above 4 ppm is UNSAFE for swimming, but TFP recommends routinely having higher FC levels. For example, target FC is 6-8 ppm in a liquid chlorine pool with CYA at 50 ppm. What am I missing here?
pH = 7.5
Free Chlorine = 2 ppm
Total Alkalinity = 110 ppm
Ca hardness = 450 ppm
CYA = 80 ppm
And now the questions. Thanks in advance for steering me in the right direction!
1. Obviously my CYA is too high. I have NO idea how to drain half my pool. From Google searching, looks like I should rent/buy a pump and drain the water to my sewer cleanout? Alternatively, I could pay a company to drain/refill it? Can somebody help!?
2. Everywhere I read, having an FC level above 4 ppm is UNSAFE for swimming, but TFP recommends routinely having higher FC levels. For example, target FC is 6-8 ppm in a liquid chlorine pool with CYA at 50 ppm. What am I missing here?
