First, thank you for all the time that so many of you obviously put into this site and helping others. It is very much appreciated. I have a new pool that's been up and running now for about 1 week. See signature for details. I'm in southern NH so it's going to be winterized and closed in the next 7-10 days. We are just running it to make sure all systems are ok. Since being on this site, I've learned about the right water test kit to buy, and I will, but I figure I will buy it in the spring so the reagents are fresh. For now, I thought, better than nothing, I'd rely on the testing kit I was given by the pool company. I know these are not ideal from reading here, and miss some key tests, but I figure it's a start.
Overall, the pool water LOOKS great. Crystal clear. At night, when the light is on, maybe a touch of haze to it, but it looks great. Here's my readings that I have from the kit I was given:
pH: 6.6 (this is the issue)
CyA: about 20, hard to be sure
Salt: 3100ppm (as averaged by automation system)
So I see I certainly need to get that pH up. But I'm also closing the pool soon. I figure I should definitely get the pH up, but what about the CyA? Doesn't this all get out of whack when the pool is covered and sitting idle all winter anyway? I figure pH is important because the water can get corrosive when too low.
What would you recommend? Should I add soda ash? I've read that it can bring up alkalinity, which measures ok right now. Would Borax be better?
Thank you again for your help.