Should you use sodium or calcium shock for gunite pools?
Sodium hypochlorite (liquid) would be better because it is a liquid. However it will raise your TDS level if used extremely. I have also used Cal-hypo but you have to be careful not to allow a pile of it to hit the bottom as it will bleach the color. Some people recommend desolving it in a pail of water first. I never took the time to do that though.
