I really appreciate the education. I when ahead and ran a complete set of analysis and I have a question about the pH. I used a Taylor K-2500 kit.

Free Cl2 = 5
pH = ~ 7.1 (Taylor) 7.37 (Laboratory Probe)
CYA = 30
TA = 40
CA = 20

I was a little surprised that TA was 40. I thought it would be lower.

As for my pH, my Taylor kit shows a color somewhere between 7.0 and 7.2. However I took a sample into work and had one of our chemistry tech run the pH using a calibrated probe. They got 7.37. I suppose I need to raise the pH a little as my primary concern is corrosion of the walls should I have a leak. As I said in my original post, I replaced the liner this spring and to my surprise found a good bit of surface rust on the walls. I removed the rust, treated it with rust converter, then painted the entire wall with aluminum Rustolium paint and then coated the lower 1/3rd (where most of the rust was) with rubberized undercoating.

I originally thought my pH would come up naturally using bleach, but with such low alkalinity I may need to bring it up another way.

Questions

1) Should I go ahead and manually bring the pH up to some higher value?

2) If so, what pH should I target considering my low alkalinity?

3) What should I use to get the pH up?

Again, I really appreciate the help.

Jim