Okay, first of all, we had party on July 3rd, not 4th. I was so careful making sure FC = 7, pH = 7.5, etc, water was just right. Party was great, water looked great. Had about 30 people in pool at one time or another. Awesome time.
Today (3 days later) I tested water. FC is ZERO! Dang! I guess everything you hear on TFP is true. Never had it drop that fast. Added one gallon directly, put two more in the LQ. Dang!