Backwashed my filter last night. Got plenty of Georgia red clay out of it from the build. Added the 5 cups via dumping most in the skimmer and some in front of the slimmer. What didnt get sucked into the skimmer I thought would dissipate and get filtered out. Came home to a pool floor covered in DE....actually had to manually vacume god that is time consuming!!! Now I got to run the filter 24/7 to clean up the cloudiness...can still see across the pool underwater but it's not as sharp of an image...