Ok as the title states I can't get more then 8-10 hours out of any filter sock from 100-400 microns and it is more like 2-3 hours before they are fully clogged. I have tried putting Polyester fill in the filter socks to see if he would catch the bigger particles and I could just change that because it's easier than washing a filter sock but that did not work. I also bought the Reusable plastic filter sock holder With the polyester fill and it did not work. Then I found out fluvel Fx6 filter pads are perfect size and fit in there amazingly but I still only get like 2 hours before the Courses one I can find is clogged up. I was thinking about adding clams to help but the suspended particles has any one else tried this or have any other suggestions I am willing to try anything I would love to just go 2 days but would settle for anything that would allow me to go 24 hours. This and cleaning the glass is the only Maintenance I have on this tank and don't mind doing it but every few hours is crazy. For the record I have a 600 gallon mix cichled tank 96 x48 x 30, with a c2c overflow and a 125 gallon sump with two 7 inch filter socks and I measured the flow at a little over 3200 gph not that much for that size tank. Any suggestions will be greatly appreciated.