My best friend is a pool guy. He has always told me that if still cloudy after clarifier, your pool is in shock. You don't add any chemicals, just backwash and rinse daily. He also said that it is ok to swim in. baking soda should clear it up. dont over do it though. dont use the whole bag about a cup per 5 feet around the perimeter of the pool. throw another cup in the center of the pool. worked for mine.