I recently had an above ground pool installed. I decided to go with "ez pool " chemicals since I am very busy through out the week. Pool has been filled for 4 days . My wife and I swam in it this weekend. Today I noticed that there is a green tinge to my water at the bottom of my biltmore steps. Can or rather should I " Shock" my pool to get rid of the green tinge? I do not have a test kit with numbers just color range. Any help would be greatly appreciated.