Thanks CarlD. I don't think we'll be able to backwash to a drain but it's something I'll inquire about. That would be the best setup IMO. However, if I'm backwashing onto grass/shrubs or trees, will DE hurt them? I'm assuming some of it comes out during the backwashing.

Found the skimmer socks and they are pretty cheap as you mentioned. Does one size fit all baskets? How often do you change yours?