Guys,
Reading the PoolSolutions subscriber pages produces a minimum calcium level of 70ppm.
http://www.poolsolutions.com/ptc/gui...c_chem_ps.html
It also says to "Never add calcium if your level is 120 or above. "
However reading this forum I see quotes of 200pm minimum.
http://www.poolforum.com/pf2/showthr...hlight=calcium
I also see quotes of 220ppm
http://www.poolforum.com/pf2/showthr...hlight=calcium
On my 9lb jar of Cal Up the label indicates 100ppm min.

So my question is what is the minimum Calcium level for gunite?
Thanks,
Eric.