White out

[Marcus K]

The last couple of days my tank has been cloudy. It seems to get worse and lighten up throughout the day to a point that you can not see the back. I had this happen a while back after I had added Caulerpa to my FO. Im not sure what day it started to turn cloudy but I did just do a water change. I am using IO and would like to test my salt. What do I need to test for, what would be a good brand of test kit? I have Hagen as that is what my LFS has. When my Caulerpa went A-sexual I yanked all of it out. Any thoughts? I have a batch mixed and ready for a change.