We are flocking the pool this weekend. My filter is about 10 years old (got it in Sept. 2000) and I know it is a Hayward and that is all I know since I am at work. I know I am supposed to set the filter on recirculate for a little while. I have whirlpool. Is that the same thing? And we don't have a slot that says waste. What would be another word for waste on our sand filter? Thank you all. I love this board.