If I was running a fuge with algae (cheato) I would run it in a way where your fuge as more contact time with the water than the skimmer. Both benefit from contact time with your overflow water, but I've always felt like lower flow to the algae fuge is better. I like themaggots idea of running them on opposite ends, then you can control how much overflow each gets. I don't like the DSB though. Not overall, but a DSB really needs special attention and conditions to be effective. There are easier and more effective ways to get rid of nitrate IMO.