Hi, and thanks for the welcome! I am ready to have my pool filled in no matter what it costs; so frustrated!! I have been to the pool store so many times I cannot count the time and money. I had a mustard algae bloom that the pool store initially told me was pollen. I found through the internet what it was and I have treated it. It was caused because I have not once been able to get and maintain a chlorine reading. The pool store keeps telling me how "perfectly balanced" my water is and that I need to shock it. I shock it every day (23500 gallons - 3 bags) and still no chlorine. I vacuum every day and still have a white powdery clumpy stuff on the bottom throughout the pool. When you stir it the water clouds, then over a few hours it resettles to the bottom. I am supposed to go on my first vacation in 15 years next week and now am afraid to go Any help?