Sorry about the pic quality ,... Have a dsl , macro lens , and tripod ... Just have not got around to taking some pics ... To explain ... The drains from the display run into the 200 gallon tank (settlement tank) on the bottom and gets pumped with mag 12 to the macro tank above that has two overflows one into the roller mat and the other back into the settlement tank... So I can control the roller mat feed the settlement tank then drains through filter socks to the equipment tank that feeds back to the display with 2x 12000dc's on 1" lines.... Complicated I know but I have large fish load and needed to increase water volume... Step up from the sump I showed in the first pic. Review .... Must say its a great product run about 800gph through the roller mat and it works.... It's been a couple month and I'm on my second role... I will buy the seaside unit to filter from the settlement to equipment tank .... It is a vast improvement from filter socks.... Plug and play. Hope this helps...