Building my first sump. Questions????


Reefing newb
I'm just now getting back into the hobby after a failed attempt 15 yrs ago. this time reading and learning all I can. I'm building a sump for my 29 gal. My question is, is there a specific guideline on how the design should be? I'd like to have a filtersock where the skimmer will be and make a refugium as large as I can. Do I have to a seperate baffel for the intake first or can it go in where the skimmer and sock will be?