After 2 long weeks of trying to shock the pool (pump problems) I have finally held FC overnight and the pool has turned that wonderful milky color and I see the light at the end of the tunnel....my question is what FC level should I start treating my high PH and TA? When I started I had my PH down to 7.0, but I messed with the return and had too much water circulating on top of water I guess that's what caused it to rise to 8.2. My FC is at 17 right now...Thanks!