I have a Bashsea Smart Series sms-3615 sump that i am working on plumbing. It comes with two different drain pipes of different lengths. The longer ones i believe are for when you are not running filter socks and the shorter ones for use when using the filter socks. To me it seems like once you have the drain pipe on you can not take out the filter sock to clean it? I am sure i am missing something here but i cant seem to find any information about it and the sump does not have any kind of installation instructions. Does anyone on here have this style sump and uses the filter socks? Thanks!