The Seio's drive me mad. I have a very difficult time placing them in a way that everything receives a good flow. The SPS get an alternating flow while the LPS get a gentle, moderate flow.. as well as the anemone.
I think it all comes down to my laziness
It just happens to work best this way... because of where corals are placed up top, etc..
I'll take that into consideration though, for a rainy day when I'm feeling bored..haha