Had the pool since 2013. This is the first year we are doing the maintenance ourselves . We had an algae I used green to blue with the flocculant. I vacuumed out to waste. A brown powered substance was still in shallow end. I stirred it up and vacuumed out to waste again I then shocked my pool. Deep end is crystal clear. But shallow end will not clear up. Salt level 2342/ PH 7.5/ TA 120/ CH200/ CYA 60 attached picture. Help What do I do know? Been all week getting my pool ready for the kids to swim!