I did use step two. I reassembled and recharged the filter with DE, but I didn't test today. It's supposed to rain all day tomorrow. I set the pump up to run its regular program, and hopefully when I'm working from home Tuesday and the weather is clear, I'll see a difference. I still have a lot of Crud in the pool, as vacuuming doesn't take long to fill the skimmer basket and using the leaf rake I'm still getting a lot of Crud. As for what itchyballs are...https://commons.wikimedia.org/wiki/File:Sweetgum_tree_seed_pods.jpg