So we just got back from a 3 week vacation and find the our new pool with burn marks all over the bottom and several mortar shells as well. The burn marks aren't a big deal because they are slowly brushing away, but I noticed my kids smelled like sulfur after the swam. Is there any test I can do to see if the water is safe? Is there any danger from fireworks in pool? Typically they would be removed the next morning in most pools, but since I was gone, I'm worried that the water had time to absorb bad stuff.
