My pool is above ground 7500 gallon, vinyl liner. I am getting the water testing again at a store, so I will post the results for you this evening or tomorrow morning. I mainly used Blue Shield, liquid Shock, Sani-Shock 2, and the Blue Shield Algae Remover, and Blue Shield Clarifier. To which nothing worked so far. My test strips showed to be fine, and I took it to one store last week, where they did testing, and it was fine as well. I did notice an above normal amount of algae when I opened the pool, so I'm wondering if its just dead algae that the pool filter is not capturing..... Nonetheless, I will have the test results for you this evening. Thanks!