I just left Leslie's Pool. I have had a green pool for two weeks. Leslie's told me I have nitrates at 40 PPM. They sold me 6 pounds of their Fresh N Clear. Then told me to check with them in 2 days. I am really frustrated with this green pool. Yesterday I added algae control and shocked with a pound of Power Powder Plus. Then added another pound of Power Powder Plus this morning. I will go home, get in the pool (above ground), vacuum, brush walls, (which I did Sat & Sun), backwash and add the 6 pounds of Fresh and Clear. I'm so scared. I was told by someone that I should drain my pool & refill. It's already August, and will be taking down in a few weeks. I am so confused with all I've been told. Has anyone had success without draining their pool? Leslie's said that I have to kill the nitrates before going after the Algae. They did say that my TC and FC were high. 10PPM. That maybe I will luck out. You're the pros... your thoughts? Also, Phosphates and Ph was high according to Leslie.