Here is what's going on, and I am not sure what to think right now since I have never been through this before. There has been improvement and there was a lot of improvement after I vacuumed to waste last weekend. I can see the floor of the shallow end and it seems to be clearing 4 to 6" more and more each day. However, my FC has been holding over night, and I lose 3 to 4 ppm during the day, but the deep end of the pool still has a greenish look to it. I keep reading on the forums of the pool having a grayish milky look when all the algae is dead. Is it normal to have a greenish/darker color in the deep end even with dead algae? I would think if all of the algae wasn't dead that I would lose FC over night.