I just bought an intex 16 x 48' pool. I filled it with well water and then put about a half a pound of HTH shock treatment in it. I ran the filter about 7 hours and the water turned dark brown. I tested it with the strips and the FC/Bromininine is 2/4, PH 7.2, TA = 0. What do I do, I am very new at this.
AJ