I would do it differently, more like the pic I posted. Don't use the bio-balls. They are not necessary and will just add additional nitrates to your tank. Your live rock is all the biological filtration that you need. I would put the skimmer in the same chamber with your drain. You could put a filter sock in that chamber as well, if you want to filter out some of the detritus. I would make your return section larger and fuge area also, if you can. Some people use two baffle bubble traps and some use three. I would put a bubble trap after the fuge and before the return section. Pretty much just described the sump I am building (in the pics).Ok I will. And I'll look into those skimmers. Is the original picture I posted a good design for a sump in your opinion?
Is there any way you could draw out your design on paper so when I go to make mine I know exactly what to do?

