My pool is back at it again..

To start from the beginning I had cloudy water, that I couldn't clear up. I used a floc (second time this season) and it cleared up beautifully overnight-I vaccumed to waste and refilled. I added more iron out and things were good for three days-then cloudy water again. This time I am shocking. I have had it at shock level for 1 1/2 days now. It tuned from cloudy to milky-but no clearer. I can only see approx 1- 2 feet down.

Does anybody have any other suggestions?

18x 48 intex
CL--Really Orange (Walmart drop kit only goes to 5)
PH-7.2
Alk-200
Cya-30