Nope.... not snarky, Just look at the first systems (10 years ago and more) that were reef tanks with drilled overflows... the overflow was in the right or left rear corner. The and the water was returned on the opposite rear corner.
Since that time, more daring people have designed systems more pleasing to the eye.
I don't know about you, but my reef is about 1 thing... it all boils down to "Eye Candy". If I can't make stuff grow, Look good, and draw attention for being neat and facinating, I'll drain the tank and buy a mortor cycle.
I'm sorry if I seem "Snarky" but it's alot about looks. And it's alot about books. To understand where we are going in this hobby, you also need to know where it's been, What was broke, how it was fixed, and the new processes that were switched to. Beleive it or not, undergravel filters were once cutting edge technology, and sponge filters and airstones have produced some very healthy and successful reef tanks... but gauging what's successful is in the eye of the builder... you. If you just want something in your livingroom that looks like it was plucked from a wholesalers floor, where they only need a glass box with water that flows in, and flows out.... do it. I'll drill it in a second. You would proly do good to look at an aquaculturing site, like
www.Aquaticecosystems.com - they specialixe in the not so pretty, but making it work for you and being functional.
back to topic... The thought with the box in 1 corner and the return in the other, is that filtered water is returned the furthest from the box/overflow to give the water more of a chance of being completly "turned over" before being filtered....
WE LEARNED.... that dead spots and detritus spots developte among other things..... with this method... and additional pumps were needed to avoid this.
I and I capitolize I try to remove as much equiptment from the inside of my tanks as possible... thats what sumps and filters are for... aquariums are for fish and corals and rocks.
Do you agree?
Jason