Hi guys. Newbie here. I wanted to get some feedback on the sump setup. So I did usual 3 section setup with skimmer, refugium and return pump setup in the 30g sump. It was good But I hated the waste of space on top of refugium area and decided to make a top section which will drop water into skimmer section and then to refugium and then return. I can use this for extra filtration or can add small bucket to keep extra live items etc. See pic for detail. This is for 75g display tank with fish only for now. Working good for now. Thanks!