I have a Red Sea Reefer 350 and my socks would clog once a day initially. After the tank was running for a month or two I could get about 2-3 days out of them before the needed cleaning. Now I just put the filter socks in right before my water change to pull out anything I kick up for about a day or two and then run without any socks until my next water change (typically every two weeks). Constantly monitoring and cleaning or changing them is not worth it for me, although the tank does seem to be extremely clear when I use them...