Sump design question for my set up

[saltwaterexotic]

Well I changed some things around cause didn't feel. had enough room for sump is and equipment under it and added two side tanks to my stand for 24"x24"x12" frag tanks giving me more under stand room.

I now have 7'x2' area for sump and equipment how big size wise of each section (return,drain and refug ) should I made the sump I want to leave room for reactors and supplies

FYI the welded top shelf is for a 22"x8"x9" tall ATO

 

[Pife]

It looks like you have a nice sump setting behind your stand. I would use it.

 

[saltwaterexotic]

that's the new original one I'm selling I built decided it was too small for what I'm doing. I want more return volume and larger refugium and he drain section to handle 2 tanks