well i've spent the last hour searching for a post with no luck, of someone who rebuilt a sump/fuge area for someone else( i believe the DT was about 300g). The previous sump kept overflowing and the person had to keep towels under the cabinet to be ready for it to overflow. anyway, the person who rebuilt the area did a great job, the used about a 37g sump & a 20g fuge(which hadn't been filled yet but there was a red bowl with chaeto inside the fuge). The fuge had to drains the dump on top of the baffle going to the return of the sump. The huge drain line was split, one to sump, one to fuge.
This set up was perfect, and i would love to mimic it but i cannot find it. I'm going to try and sketch it out by memory, but I looked at sooo many set ups last night the image is kind of vague.
For now I'll keep looking