My Fuge is after the filter socks and has no effect on their population numbers getting up to the tank from my return area. Also Pods in your tank that may get washed into the socks are at very best small numbers IMOThis is the same thing i do, unless there is a reason to polish the water. I Thought that if you ran a sock it would harm your pod population, is that true?
Also there are times that i run my tank without them just because i get tired of changing them out, But do go back to them most of the time and even with them my skimmer still pulls tons of Sludge from my water. My socks get the larger pieces of uneaten food and the skimmer gets the dissolved organics in the water that the socks can not. JMO
Bill