We have never worried about calcium in our pool because the previous owner told us that with a fiberglass pool it doesn't really matter. However, the folks that just installed our new pool pump said that low calcium can cause problems in pipes & equipment, so we decided we should pay attention to it.
We had just shocked our pool, so chlorine was about 12. pH and Alkanity were perfect, but calcium was only about 40. We added 4 lbs of calcium chloride, and today, it's up to between 50-60, but chlorine is now 28. Even if we leave our pool open all day (which we don't typically do if we're not using it), the chlorine level does not dissapate that quickly. If we keep adding enough calcium chloride to get the calcium up to 200, I have no idea how high the chlorine is going to go.
Also, our CYA is 90, so we plan to avoid using any pucks unless there's another way to bring that level down too.
As an FYI, we're using a Taylor Test Kit with reagents that are either new this year or within the last 2 years. The kit is stored in a mudroom closet, so away from heat/cold/light.
Any suggestions for what we ought to do to get this balanced?