I bought an above ground pool from a family friend and I have used it twice in two years. The first year we got off to a late start and before I knew it, it was time to close it. Then last year, my water was beautiful when I opened but I had improperly stored my sand filter and it shattered upon start up.... couple that with lots of rain and no filtration/pumping for a several days and I had a beautiful algae crop. I treated with massive shock and algae inhibitors, but the algae was too much for my sand filter and I never did get it clear. I am trying to open the pool this weekend and I have new sand... I'm debating draining the pool completely and scrubbing it down since I cannot seem to vacuum the sludge off the bottom. Any suggestions???