I went away and came back to a green pool, and I am getting ready to close for the winter. What do I do about the green algae, will the winterizing chemicals take care of that, or do I need to pre treat before the winterizing. Also how much antifreeze do I put in. If I run the filter, am I loading it up with algae that could cause problems in the spring. I have leaves in the pool, but I plan on getting in there (brrr) and getting them out before I close it, but I wanted to wait until I drop the water level. This is my first time closing, so I am scared I will do it wrong.