Next time you talk to him ask him what all they added so we know what you are starting with. I have my guesses but want to be sure.
The pH is going to shoot up fast due to the plaster curing. That is why Maddie said to get your hands on some muriatic acid.
The pH is going to shoot up fast due to the plaster curing. That is why Maddie said to get your hands on some muriatic acid.