I'm in the process of setting up my plumbing and a debate has occur within the club i'm in. Where do you put your sock? At the end of your drains, or at the end of your skimmers. Whats the relevance? I for one ; i paid my dam skimmer $500, so i'm going to let it skimm his little heart out!!!! I'm not about to upstage it, with a $10 , 200micron sock that i'll have to wash all the time, i have enough laundry. So it'll be at the end of the skimmer who's suppose to skimm and i'll also know the skimmer's performance. You might have another angle i haven't consider. Which is?