Tisha, for now, don't worry. Let's hope that the pool builder does know his chemistry well enough to prevent any problems
The pool I was talking about is a liner pool, though the spa is fiberglass.
If the pool builder doesn't, or can't, take care of the problem, please give us a full test reading and the pool size in gallons (liters), we'll be able to tell you what adjustments need to be made to keep the unwanted, and unnecessary, calcium in suspension. I truly hope that this accident doesn't cause you any trouble!