Just got a intex 15x48 metal frame pool for my daughter. I'm using the 1000 gph pump that came with it and also got a intex saltwater system. I can sweep the pool until it is clean and put the cover on it. The next day I look in the pool and dirt on the bottom of the pool. I just don't get it The pump kicks on and runs 6hrs every night and the saltwater system runs for 4hrs. There's not anything floating on the top when I put the cover on it or nothing on the bottom. But every morning the same thing.....Dirt.