Well I"m going to get 2 power heads, either 2 maxii-jet 1200s powersweep 228's. Both move about 270gph. My spray bar for my sump return is up in the top right side of the tank with the skimmer box on the back wall on the left side of the tank. Should I go with the powersweep so they rotate water and where should I place them in the tank?