I've not worried about CH for the past few years, but from what I've read here, I know I should take up my CH to about 200. It's 40 now. I do fight staining so maybe increasing the CH would help.
I have a fiberglass pool and a few years back, I tried adding CA. But, I had a lot of sequesterant in the water and it removed 100% of the CA to the filter. It all got backwashed out! From that point on, I never worried about it.
I was in Leslie's the other day, and they were discontinuing their 60% cal-hypo shock, so I figure, I could add some calcium while using the cal-hypo to add Cl. For the past 5 years, I've just used bleach. The poolcalculator helped me figure out how much of the cal-hypo to use daily to keep my Cl level up to where I needed it. After using the cal-hypo for a week (the pool was covered with a solar cover) upon removing the cover and going into the pool, I found it to be cloudy. I've stopped using the cal-hypo and am running the filter 24x7 to clear the pool.
So, given my experience with cal-hypo use for the first time and the experience I had a few years back with unsuccessfully adding CA, I wonder what you good folks recommend for CH ?