Right now, Id just be happy to get the walls behind the tank done to get it in there and up and running....
My tank has the dual overflows built in(each has an intake and an outflow) and two additional bulkheads drilled already. The two additional holes are located in the bottom of tank in the back near each overflow. Perfect for a closed loop. I think Im gonna have a Iwaki pump with over 1000 gph. Gotta do a bit more research. Did you start building yet?