Yesterday my step son and grand-son had a pool party at my home. When I came home that afternoon, I noticed that the water was slightly cloudy. I checked the pH and chlorine levels (7.45 pH, 4.8 FC, 1. CC) and there were right where they should be. I also checked the FC the following morning (over night FC drop test) and the reading in the morning was 4.5 FC. So an overnight drop of 0.3 ppm implies little or no organics. Other test reads (from various previous test):
I have noticed in the past when this occurs, the cloudiness usually disappears in a day or two. Any ideas on the cause and solution?