Yesterday I added about 10 pounds of live rock to my aquarium my son after about 4 hours noticed my fish were not swimming I tried to save them all of them died except for my goby and some crabs but the fox face blue ring angel and purple tang didnt make it...Today my water looks like milk I do not want to add anything until my problem is diagnosed any help would be appreciated my tank has ran strong for 2 years no problems....thank you...