Kmekab

I don't know how this works but here it goes. I have a 37x15x6 inground pool with a sand filter. The pool was green and a pool cleaner put something in the pool and you could see the bottom but he never came back to vaccum it. Needless to say it turned back green. My husband and I have been watching videos and testing the water, adding chemicals, back washing the pump and it has turned a light blue but you still can't see the bottom. I have been pulling leave and algea up with a pool skimmer net. We have tried flocculent and clarifier. Nothing has worked and it been a week. What should I do next?