I've seen that new plaster releases alot of alkalinity and some calcium.
The water in my area is very soft. (about 50ppm calcium)
My questions are:1. Should I allow the plaster to cure 4-6 weeks before
adding calcium?
2. Am I causing damage to the plaster by doing so?
I've seen water come up to 200+ppm by the end of the cureing process.
3. Is this the right or wrong thing to do?

Thanks much,
Rick aka deepnnet