So I'm thinking of building my own sump, but have some questions. One is how small would be too small. I'd be installing this on a 30 gal bow front tank, but my under cabinet space is only about 9"x14". I can't find any premade ones that fit those dimensions, hence why I'm looking to build my own. Good thing is I work for a local glass shop and we throw away glass all the time. I hoping to build a sump with enough room for a skimmer, some room for extra live rock/ mechanical filtration and hopefully still have room for a small refuge. So if anyone has any thoughts on layout and "do-ablity" I'd very much appreciate the help.

