Flock it. It takes all of the particles out of the water. Dont throw 60-70 worth of assorted chemicals at it to fix it (the pool place way) 15-20 buxs of flock(aluminum somthing) and then vacum. after it takes all the stuff out of the water it will look like theres a layer of yogurt on the bottom of the pool make sure you vacuum it to waste not the filter.