Filled a 1200 gallon pool 4 days ago. HTH test showed FC 0/0 PH 8.4 TA 240. Shocked it 2 days ago and put a Chlorinator floater in it 5 hours later. Yesterday it showed the same results and I put 4oc HTH PH minus in it. Today it still showes the same results. I dont know what to do, water looks still super clear and nice.