Well the basic design is good. From the drain lines I'm going to guess it's a herbie "style" overflow. One as a throttled back siphon, one as a vented stand pipe (unfortunately better known as a "Durso"... It had been around YEARS before he "invented" it...) and one as a failsafe incase one of the others gets clogged. Good system, just requires 3 holes drilled in your tank.
Oh, I'm guessing it's a mistake but just incase. The last baffle right beside the pump needs to be all the way to the bottom of the tank. Otherwise the sand and such from the fuge area will get into the pump. Also some egg crate of something similar at the top of that baffle will keep the Macro from going over the top. Now that I think about it... Switch the two baffle groups. But the triple next to the pump and have the single by the overflow.
Chris