Alright, this is the final plan for my sump/refugium that I'm gonna get made out of acrylic. Does anybody see anything wrong with what I have planned? My tank will be draining through a 1 1/4" durso standpipe which goes to a 1" bulkhead and will split off into two seperate ball-valve controlled drains. One will go to the refugium and the other to the skimmer. The o/p of the sump/refug will go to a 450 GPH Iwaki external pump. It's ok that I'm gonna have a 90° elbow going to the pump???
By the way, I got the idea for this sump from Matt's. It's pretty much the same but smaller.