If the tank has dual overflows you could run a three compartment sump like mine.....one drain to the skimmer side.....one drain to the fuge side....and return in the middle....you want both the fuge and the skimmer getting "dirty" water...you could probaly "T" the drain if it isnt dual overflow....just throwing it out there

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260g mixed reef, 105g sump, water blaster 7000 return, Bubble King SM 300 skimmer, Aqua Controller Jr, 4 radions, 3 Tunze 6055s,1 tunze 6065, 2 Vortech MP40s, Vortech MP20, Tunze ATO, GHL SA2 doser, 2 TLF reactors (1 carbon, 1 rowa).
http://www.canreef.com/vbulletin/showthread.php?t=50034 . Tank Video here
http://www.vimeo.com/2304609 and here
http://www.vimeo.com/16591694