Went on vacation and came home to pool troubles. My pool service was on vacation the week prior to mine so the pool was without service for two weeks. He last saw the pool on July 30. It was fine. I last saw it on August 8 and it appeared to be fine. Green algae made its appearance between 8/8 and when my son discovered it on 8/14. Pool service came and added chlorine (4 lbs) and some algaecide. Green is gone. Now my pool is extremely cloudy. Ph is 7.6, Free Chlorine is 10, Using strips and the total alkalinity is low. I don't have a great test kit, I guess. My grandkids would like to use the pool today. I want it safe and clear. What can I do?