I have a Waterbox 220.6 and I still use socks. I change them every 3 days and basically throw them all in a bucket until I only have 2 left (I have about 20 of them) and then throw them in the washing machine to clean. Why is everyone so against them? They seem to be doing a great job for me on filtering out all of the garbage in my tank. They're super cheap and they work. Am I missing something?