I put 2, 1 lb bags of Leslies power plus to shock the pool on am 4/13/11. When I got home from work, I tested the FC and it read 5.0 and ph 7.6. Today 4/14/11 I tested it again pm and it read 3.5. I am trying to get the pool balanced with the chlorine, but do not know where to start. One poster...