Well since I'm running only the 54gal,I took the second large canister filter and put it opposite the other,add to that a maxijet 1200 and a emporer hang-on-the-back you got alot of good water flow(the filters will go as soon as i set up my sump)
Its funny watching how the clowns swim up along side of the pwr head and then turn only to be shot down the far end of the tank,then do it over again
Jim