I really need help. I have been dealing with Leslie’s and am about to give up! I started out with a very green pool and now have a very cloudy pool . I have put hundreds of dollars of chemicals into it in a month. Tried gallons of chlorine, green to clean. Pound upon pounds of shock, algaecide Clarifiers . All my tests are in normal range except total chlorine and free chlorine are basically zero. I recently put 16 pounds of shock and reading is zero by morning. How can I kill algae trying to grow and clear the water if it won’t accept any chlorine?